This is a fantastic place to stay in Prague. It is close to the train station and many tram stations/lines, so travel is easy.
The apartment is spacious and pristine. The kitchen area is functional and well-equipped. We saved $ by having breakfast in the apartment rather than going on. The views out the window are beautiful, too. The bed is comfortable. The size of the bedroom is large, so for those Americans who complain about European hotel rooms being too small (silly complaint, of course), this place is for you.
A few tips: the halls have automatic lights, so if you are getting in late, you might be in the dark for a split moment. This is a bit startling the first time. Also, if you wait for the elevator and aren't moving, the hall will go dark - which is a bit creepy but you get used to it - just dance around a bit.The elevator IS small, but it's better than walking up to the sixth floor each time.
You might read that the park near the station is unsafe. We did not find it problematic. Yes, you will see some homeless, but there is a strong police presence, and if you spend any time in a city, you know that parks often have homeless. Don't let this location discourage you from booking the apartment.
The apartment is beautifully decorated and Daniel and Bea are extremely responsive to emails.
If I were to be in Prague again, I would be happy to stay here.