Our stay was wonderful. The room is in good condition -- though yes, as others reviewers warn, the bathroom has steep stairs going into it so not very ideal for children or those expecting to be drunk during their stay. Nevertheless, the room was in a prime location, 1 minute away from the town square.
In addition, Alena and her assistant Tatyana were very very very nice. I was traveling with a friend and was supposed to change rooms for my last night in Prague in a different Airbnb because my family of 6 was coming to join us. They were delayed by 3 hours and I was not able to travel to the other Airbnb as it was too far away and too difficult with my luggage. I asked Alena if they would mind holding my bags for me in the apartment while we were out on town and waiting for the others to arrive so I could change rooms, and it wasn't an issue. They were very nice and accommodating. Communication was constant and responses were instant through both the Airbnb app and text messaging (they provide you with a number).
I highly recommend this apartment if the bathroom stairs are not your concern.