It was really a great pleasure to be a Ondrej's guest.
Apartment is a large, fully equipped and very clean, but the main thing is that it is a great location, it is quiet and everywhere is very close, we visited the most important places of Prague only walk (but if someone prefer, on the front of the apartment is a tram).
Ondrej is helpful and hospitable, there was no problem to contact with him.

I recommend this place.