The location is fantastic and the check-in is easy (even if some of the instructions are wrong). The appartment is OK but definitely not Luxury and not what Martin promises in his description. Communication with Martin is TERRIBLE.
There is no Nespresso coffee machine, there are no shampoo or bath gel (well, now there may be shampoo: the one we had to buy and leave in the appartment as we could not take it back home with us), and when he says there are hangers it means there are 5 and not in the best state. The AC didn't seem to work too well either.
The worst part is that Martin ignored all our messages, which were not few, asking about all of these missing things. It certainly did not feel like having a superhost.
The internet worked okay but the password Martin gave us was not the right one (we had to check under the router).
Anyways, we were OK as we spent most of our time out of the house and only went back to sleep (the bed was actually very comfortable) and we enjoyed being right at the center of Prague, but we are very disappointed with the treatment we received from Martin.