Negatives:
1. The supposed 500 sq ft unit is poorly laid out for 4 people to stay (2 adults + 2 little kids). The layout, with the stove and a large fridge took away a lot of usable space compared to a nominally smaller hotel room (say a 300 sq ft one).. It was meant to be an apartment for 1 adult (perhaps a couple of slim build) to live. As my wife noted, the bathroom sink is tiny. The photographs on Expedia are factually accurate, but helped by an unusal bright day and the skills of the photographer.
2. There is no ventilation. There is a window air conditioner in the bedroom closet, but it's not install. There is no vent in the entire unit otherwise. The unit was as a result extremely stuffy while outside temperature is not higher than 70 degree in the days leading to our 1 night stay.
3. Next door to the unit is a personal trainer's studio. The loud stumping is felt throughout the apartment from 7:30am to 9am, presumbly when the most of the customers finish their workout and go off to work. I shudder to think what it might be like in the apartment on a weekend day.
Pluses:
The location of the apartment is decent, only about 6 minutes walk to the subway, and the neighborhood seems in the process of being gradually "gentrified" -- something like the Alphabet City (aka "East Village") 5-10 years ago.