All in all, staying in the apartment was a positive experience. The apartment was clean, easy to find, and the beds were reasonable.
At the same time, there were a few clear and less-clear downsides:
* The apartment is small.
* There's no separation between the bedroom and the living room (that operates as a second bedroom).
* The floors are extremely squeaky, meaning that if one person wakes up in the middle of the night to go to the restrooms, there's no way they wouldn't wake up the person in the next room.
* Trains/metro start rolling around 5:30am, effectively vibrating the apartment.