Josef's apartment is in a great location, very convenient to some of the major sites in Prague and located close to public transit. It is near a busy street, but the apartment was very quiet thanks to the double windows. The decoration is modern but basic; most importantly the beds were comfortable and the separate bathroom and toilet were well equipped.
We were disappointed that the apartment did not have a washer (as mentioned in the description); rather laundry could be sent out for a 15 euro fee. The listing also listed air conditioning but the apartment doesn't have it; fortunately, the weather was nice when we were there.
Overall, the apartment was very nice and Josef was very quick and helpful with his communications.