Carsten is the best host I saw so far on Airbnb! :) And this is very important if you just visiting a city for a weekend, not having much time. His wife welcomed us in the apartment, and Carsten was always responsive online.
The flat has all you need for comfy staying, cozy bedroom, equipment in the kitchen, clean bathroom. and many stylish little touches here and there to make it all look nice.
Location is great, just few stops by tram or bus to center, and Zizkov itself is interesting, too.
Recommended!