This is a very nice apartment! Carsten is a very responsive and helpful host who gives you a ton of useful information both on the neighborhood and Prague in general. The apartment itself is very cosy, well-equipped, and beautifully decorated. The neighborhood is nice and peaceful, with a beautiful park nearby. There are also many small supermarkets and restaurants in the area, making life much easier for you. It takes about 12 min to get to the city center, which, though not great, is still reasonable. The only complaint that I might have is about the shower: the water turned cold towards the end of my shower three nights in a row. I suspect that the heater could only heat a limited amount of water, but I do also confess that I like to take long showers, so it makes sense when Carsten said that this has never happened before. Anyway Carsten told me that he has called in a handyman after we left, so hopefully it is all resolved.
All in all, I would recommend this place.