We really enjoyed the location and accessibility of this flat. It was a second floor walk up so easy for us to get our luggage upstairs. It was clean and had good space for all our things (2 adults and 2 kids). I felt like it was a very safe place and location. There was a parking lot beside the building that was a good side road for us to be picked up. It is within steps from Petrin park and is a place with beautiful views of Prague. Several bakeries and cafes for breakfast and coffee in the morning were within steps even a Starbucks.
We stayed for a week and Prague was hot while we were there. There was an oscillating fan to keep air circulating. The bathroom and kitchen were great for us to use while there and the beds and couch were comfortable.
Note that it sits on a very busy cobblestone road with lots of cars and trams. With the windows open due to the heat it could be very loud. There are double windows so when closed it helped to dampen the noise but could still be heard slightly. I would recommend this place but if you are sensitive to noise I would suggest looking for somewhere off a main road or take ear plugs.