Would highly recommend Gaslamp Hostel! For my first hostel experience in years, I felt safe and welcome immediately upon arrival (which was very important to me traveling solo as a woman). The hostel itself has such a unique, homey, cozy vibe, and you'd never know that you were on a busy street downtown. Absolutely loved the funky art and colorful walls, the kitchen and upstairs eating area, and shower/laundry facilities. Everything was kept super clean, and the staff was super friendly and helpful with giving suggestions for local food/outings. This will definitely be my go-to stay whenever I'm back in the San Diego area :)