We had a wonderful stay at Martina's place in Prague. Her apartment is central to all you would want to see in Prague.
Getting the key to the place was no problem either because she owns the boutique beneath the apartment and its open until 7PM. Its also only a 15min walk from the main train station.
The apartment is tastefully decorated and updated recently with modern amenities. The toilet in the hallway room was not an issue. It is also recently updated and was super clean. We stayed at her place for a week and we never even saw one person in the hall.
I wouldn't hesitate to stay here again.