Flat is good value just next to old square and close to everything.
Communication was great and leaving our luggage to the storage room after checking out was a great bonus.
Cleaningness could be better and the toilet felt like a dungeon.
The key lock doesnt work very well and at some point someone is going to be locked in or out of the apartment.
Noise can definetely be a thing, since tourists tend to walk and shout and the sound comes into the flat even with closed windows.
TV had no working channels and WiFi only worked after unpluging and pluging again the wifi extender.
In general, i would recommend it for a short stay of 2-3 days because you can stay in the heart of Prague for a reasonable price.