We (5 people) had a great stay! The location is really good; 5min walk to the metro station and about 20min walk to Prague 1, the old town. Nearby, there are also convenient stores, restaurants etc.
The apartment itself was clean, simple and comfortable.
Sadly, we didn't get to know David in person, but he welcomed us via messages.
The only problem was the sporadically functioning WLAN and a bad connection, but David tried to help and fix it.
We recommend the place!