While the apartment was clearly very aesthetically pleasing and in a really great location, the whole experience was quite impersonal. When we checked in, only one of the two bedrooms had been prepared and there weren't enough towels. When we contacted the hosts and after a few phone calls where they told us to search through cupboards, they agreed to come set it up while we were out. However, when we got back in we just found a pile of sheets in the entrance way, with no effort having been made to set up the room. At the price we paid for the flat compared to other accomodation available in Prague, we expected better service.
Also, the lack of air-conditioning (which is clearly explained in the advert) is a problem in the height of summer as we found it hot at night. The fact that it's a ground floor flat makes it hard to open the windows to cool down.
On a positive note, it was a good location with nice restaurants around and close to the old town without being surrounded by too many tourists. Prague Days did also provide recommendations on things to do during our stay.