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Aparthotel

Onyx

3.5 star property
Aparthotel with a fitness center, near Rittenhouse Square

Choose dates to view prices

Photo gallery for Onyx

Property grounds
Sonder Onyx offers a comfortable base in downtown Philadelphia with public WiFi throughout. The on-site gym helps maintain fitness routines, and convenient laundry facilities make longer stays practical in this centrally located urban retreat.

Reviews

8.6 out of 10
Excellent

Popular amenities

  • Gym
  • Laundry
  • Kitchen
  • Air conditioning
  • Free WiFi

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About the neighborhood

Map
305 North 15th Street, Philadelphia, PA, 19102

What's nearby

  • Pennsylvania Convention Center - 6 min walk - 0.6 km
  • Reading Terminal Market - 9 min walk - 0.8 km
  • Rittenhouse Square - 16 min walk - 1.4 km
  • Philadelphia Museum of Art - 2 min drive - 1.8 km
  • Liberty Bell Center - 2 min drive - 1.8 km

Getting around

  • Philadelphia, PA (ZFV-30th Street Rail Station) - 3 min drive
  • Race Vine Station - 3 min walk
  • Philadelphia Intl. Airport (PHL) - 18 min drive

Restaurants

  • ‪local. - ‬5 min walk
  • ‪Shay’s Steaks - ‬5 min walk
  • ‪Fat Moon Restaurant & Bar - ‬1 min walk
  • ‪Retro Fitness - ‬4 min walk
  • ‪Rex Pizza - ‬5 min walk

About this property

Onyx

Aparthotel with a fitness center, near Rittenhouse Square
A fitness center, concierge services, and laundry facilities are available at this smoke-free aparthotel. WiFi in public areas is free. Each apartment features a kitchen with a refrigerator, plus a dining area and a flat-screen TV with cable channels. Housekeeping is available on request.
Onyx offers 21 air-conditioned accommodations with designer toiletries and hair dryers. Each accommodation is individually furnished and decorated. Accommodations at this 3.5-star aparthotel have kitchens with refrigerators, separate dining areas, and cookware/dishes/utensils.

Bathrooms include bathtubs or showers. 50-inch flat-screen televisions come with cable channels. Housekeeping is provided on request.

Recreational amenities at the aparthotel include a fitness center.

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Sosuite at The Onyx - Museum District

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Property amenities

Internet

  • Available in some public areas: Free WiFi

Parking and transportation

  • No onsite parking available

Family friendly

  • Free crib

Kitchen

  • Cookware, dishware, and utensils
  • Refrigerator

Bedrooms

  • Bedroom

Bathroom

  • 1 private bathroom
  • Bathtub or shower
  • Designer toiletries
  • Hair dryer

Living spaces

  • Separate dining area

Entertainment

  • 50-inch flat-screen TV with cable channels

Laundry

  • Laundry facilities

Comfort

  • Air conditioning

Pets

  • Service animals only (pets not allowed)

Suitability/Accessibility

  • If you have requests for specific accessibility needs, please contact the property using the information on the reservation confirmation received after booking.
  • Elevator
  • Wheelchair accessible (may have limitations)
  • Wheelchair-accessible registration desk
  • Smoking not allowed

Services and conveniences

  • Concierge services
  • Housekeeping (on request)

Location highlights

  • In the city center
  • Near a metro station

Things to do

  • Gym

Safety features

  • Carbon monoxide detector (host has indicated there is a carbon monoxide detector on the property)
  • Smoke detector (host has indicated there is a smoke detector on the property)
  • First aid kit
  • Fire extinguisher

General

  • 21 units
  • Housekeeping (on request)
  • Individual decor
  • Individual furnishings

Policies

Check-in

Check-in start time: 4:00 PM; Check-in end time: anytime
Contactless check-in available
Minimum check-in age: 18

Check-out

Check-out before 11:00 AM
Contactless check-out available

Special check-in instructions

There is no front desk at this property
Guests will receive an email within 72 hours before arrival with check-in instructions and an access code; your host will greet you
Prior to arrival, you must complete online registration via a secure link
You will be asked to provide the property with a copy of your government-issued photo ID after booking
Guests are recommended to download the property's Sonder mobile app before check-in
Guests can choose to either self-clean the property prior to check-out, or pay an additional cleaning fee of USD 89 at check-out

Access methods

Access code, host will greet you

Pets

Pets not allowed (service animals welcome)

Children and extra beds

Children are welcome
Rollaway/extra beds are not available
Free cribs are available on request at the property

Property payment types

Important information

Optional extras

  • Housekeeping fee: USD 89

The above list may not be comprehensive. Fees and deposits may not include tax and are subject to change.

You need to know

Extra-person charges may apply and vary depending on property policy
Government-issued photo identification and a credit card, debit card, or cash deposit may be required at check-in for incidental charges
Special requests are subject to availability upon check-in and may incur additional charges; special requests cannot be guaranteed
This property accepts credit cards; cash is not accepted
Noise-free guestrooms cannot be guaranteed
Host has indicated there is a carbon monoxide detector on the property
Host has indicated there is a smoke detector on the property
Safety features at this property include a fire extinguisher and a first aid kit
Property Registration Number 914916

We should mention

This property welcomes guests of all sexual orientations and gender identities (LGBTQ+ friendly)

Frequently asked questions

Is Onyx pet-friendly?

No, only service animals are welcome at the property.

How much is parking at Onyx?

This property doesn't offer parking.

What time is check-in at Onyx?

Check-in start time: 4:00 PM; Check-in end time: anytime.

What time is check-out at Onyx?

Check-out is at 11:00 AM.

Where is Onyx located?

Located in Center City, this aparthotel is within a 15-minute walk of Love Park, Pennsylvania Convention Center, and Reading Terminal Market. Rittenhouse Square and Philadelphia Museum of Art are also within 2 mi (3 km). Race Vine Station is only a 3-minute walk and Spring Garden Station (Broad St) is 7 minutes.

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Onyx Reviews

Reviews

8.6

Excellent

Rating 10 - Excellent. 73 out of 112 reviews
Rating 8 - Good. 12 out of 112 reviews
Rating 6 - Okay. 13 out of 112 reviews
Rating 4 - Poor. 7 out of 112 reviews
Rating 2 - Terrible. 7 out of 112 reviews

9.2/10

Cleanliness

9.0/10

Amenities

9.0/10

Property conditions & facilities

8.2/10

Eco-friendliness

Reviews

10/10 Excellent

Rachael

Liked: Cleanliness, room comfort, communication
Everything was better than expected, we had everything we needed. We would definitely stay again.
Stayed 2 nights in Feb 2025

10/10 Excellent

Kathleen

Liked: Cleanliness, amenities, property conditions & facilities, communication
Great little apartment for our weekend getaway
Stayed 1 night in Apr 2023

10/10 Excellent

Steven

Liked: Cleanliness, amenities, property conditions & facilities, communication
The view of the city from our room was amazing. It's very close to the "Fashion District" which has a ton of great shops, restaurants, and much more. I would definitely stay here again.
Stayed 1 night in Jun 2023

10/10 Excellent

Malathi

Liked: Cleanliness, amenities, property conditions & facilities, communication
Very nice hotel with all amenities. Clean and maintained well
Stayed 1 night in Mar 2023

10/10 Excellent

Jan

Liked: Cleanliness, room comfort, communication
A prefect stay, I will definitely stay here again if I am coming back to Philadelphia. A very good location, fitness and rooftop made the stay extra good. Everything I needed and more. ❤️
Stayed 4 nights in Oct 2024

10/10 Excellent

Joan Marie

Liked: Cleanliness, amenities, property conditions & facilities, communication
This property offers a fabulous rooftop area for spectacular views of the city.
Stayed 2 nights in Apr 2023

10/10 Excellent

Susanna

Liked: Cleanliness, amenities, property conditions & facilities, communication
Very clean and spacious. Really nice view with large open windows.
Stayed 3 nights in Aug 2023

10/10 Excellent

Sara

Liked: Cleanliness, room comfort, communication

Fantastic location

The apartment was beautiful and within easy walking distance of everything. The view was spectacular. The terrace would be lovely when the weather is warmer. I am already planning another trip. There are only 2 things to be aware of: 1) unloading luggage is challenging, there isn't really a good place to park 2) be aware that the main bed is a double and not a queen.
Stayed 3 nights in Dec 2024

10/10 Excellent

International Mechanical Services nv

Liked: Cleanliness, amenities, property conditions & facilities, communication
the property was in well-maintained condition all was ass needed to be.
Stayed 2 nights in Apr 2023

10/10 Excellent

Tyiese

Liked: Amenities, property conditions & facilities
I enjoyed my stay. My only complaint is the slow elevator and thin walls. I could hear everything my neighbors were talking about/ listening too.
Stayed 2 nights in Jul 2023

10/10 Excellent

MINSANG

Liked: Cleanliness, room comfort, communication
Very clean, spacious, and convenient exactly as in the photos. But, the soundproofing between floors and the next rooms is not good.
Stayed 2 nights in May 2023

10/10 Excellent

Eric J.

Liked: Cleanliness, amenities, property conditions & facilities, communication
Very clean
Stayed 7 nights in Feb 2023

10/10 Excellent

David

Liked: Cleanliness, amenities, property conditions & facilities, communication
We stayed at a one bed room apartment for a week and totally enjoyed it. The apartment is new, well decorated and clean; there is a small but nice gym on the basement. The neighborhood is a little noisy from the street traffic at night (the windows could use a bit better insulation). Not too many restaurants or shops in the immediate surrounding but we had no problem using Uber to get around. Overall, we really liked it.
Stayed 7 nights in Jul 2024

6/10 Okay

Jasmine

Liked: Cleanliness, amenities
I loved how you can walk to many places that has so much culture like love park, museums, and many good bars and restaurants. The view at nice is also a plus from the room and rooftop amazing. Also loved the privacy. What I didn’t like was the looked nice but had so many damages and black smudges on the white walls. Try to get room change and never received a response until the 2nd day I was there, mind you I was there for 3 days. Also had stains on the comforter and the extra one was ripped. I requested a new one didn’t happened until the next day. The elevator also had went out and they never gave a notice even though they say they did. So would I come back to this Sonder no I would not and would not recommend.
The view from the room
The view from the room
Stayed 3 nights in Apr 2025

8/10 Good

SyedaAisha

Liked: Cleanliness, property conditions & facilities, communication
Lack of water supply
Stayed 4 nights in Jul 2023

8/10 Good

Yun

Liked: Amenities, property conditions & facilities
It took 35 minutes to find parking, verify ID and find the building access, key in PSW etc. Not convenient at all.
Stayed 1 night in Jun 2023

10/10 Excellent

John

Liked: Cleanliness, amenities, property conditions & facilities, communication
Overall I liked the property. Walls are a little porous between apartments. They need to fix the squeaky doors. I stayed at 2 apartments. In the first the bathroom door woke everyone up when it was opened and closed. The second apartment (i added on a day) had a noisy bedroom door. All they need is WD-40.
Stayed 2 nights in May 2023

10/10 Excellent

Thomas

Liked: Cleanliness, amenities, property conditions & facilities, communication
Brand new building was clean and very elegant. Some things of note, the combination washer dryer went absolutely insane while washing a tiny load of laundry. Was aggressively shaking and flopping around and sounded like a jackhammer. Sorry to any of my neighbors that thought I was trying to break the wall down. Also the bathroom faucet was loose and literally falling over into the sink like it was on a hose and the coffee maker had the last guests brewed coffee and coffee grounds in it. Other than that it was a great stay
Stayed 2 nights in Nov 2023

6/10 Okay

Sunil

Liked: Cleanliness, room comfort
Too much noise from adjacent unit with people partying al night Long and unable to sleep. Not having a front desk to complain or get issues resolved at odd hours is a big problem.
Stayed 2 nights in May 2023

10/10 Excellent

Xavier

Liked: Cleanliness, amenities, property conditions & facilities
Hébergement grand et agréable. Bien situé, nous pouvions aller à pied à la cathédrale, au centre ville, aux musées.
Stayed 4 nights in Apr 2025

2/10 Terrible

Gregory

Disliked: Communication
Im on hold for 15 minutes trying to get into the damn hotel after a long trip to get here. This is the worst ever experience at a hotel in my whole life. Never again
Stayed 1 night in Jun 2025

10/10 Excellent

Efrain

Liked: Cleanliness, amenities, property conditions & facilities, communication
Quiet location, beautiful and modern decor. Windows floor to ceiling brings lots of light and a great view. The only bad thing I can say is that you can hear everything from next room…
Stayed 1 night in Apr 2025

10/10 Excellent

maria

Liked: Cleanliness, room comfort, communication
My first time staying at a Sonder. The location was close to Temple University. Parking lot access right next door. Room was spacious and had all the amenities. My husband is handicap and in a wheelchair so I live chatted and asked for assistance and even though there is no on site help they sent Jonathan to help and he was great. Like your own little apartment. Only con was could hear person above us walking. Sounded like jolly green giant.
Stayed 3 nights in May 2025

8/10 Good

Lakeisha

Liked: Cleanliness, amenities, property conditions & facilities, communication
The only complaints I have is that my shower head was broken and it was a little noisy. They did however provide earplugs which was beet helpful.
Stayed 3 nights in Apr 2025

6/10 Okay

DOUG

Liked: Cleanliness, communication

Nice but loud and unsecure entry to main hallway

It would be ideal hotel for a solo trip with no kids. No front counter or drive up area to unload luggage Door to the lobby is very unsecure, questionable People in the hallway at times. Rooms are very loud due to outside traffic. Rooms were nice, probably would not stay there again.
Stayed 1 night in Mar 2025