We were 2 people staying at Petr's place but in my opinion 4 people would also have comfortably stayed there. The room is large and open-plan, the kitchen had what we needed to have breakfasts there. One great thing for us was that, because it's on the ground floor, the room was cool - around 18 degrees - which was great in the hot days. I got great sleep at Petr's place, as the bed is very comfy, the room temperature ideal and the area very quiet. Public transport is a 8-minute walk from the apartment, and nearby there is a cafe with some of the best coffee I've ever had.