I spent 7 weeks in total in Daniela's apartment. It is very modern, VERY well lit, lots of storage room, and - in general - had everything necessary to make my long-term stay enjoyable.
The location is amazing - right in the heart of Prague (as compared to the noisy tourist center). Lots of great restaurants, bars, and pubs all within walking distance.
It's also right next to a metro station, and you have access to several different tram "arteries" within a few minutes of walking.
The host was very responsive, easy-going and accomodating.
All in all - a great stay!