My friend and I had a great stay at Karen's. The airbnb is as described. We were welcomed by her colleague very friendly and she also described us in a map where to go.
The appartment is right in the center of prague. Everywhere you want to go can be done by foot! There is also a supermarket close by and a lot of restaurants where you can eat.
In the end, we have a tip for everyone, who arrives by car: don't (!!) drive in the center, there is a p+r spot at Zlicin, from there, you only need 15-20 minutes to Karen's appartment. The parking space is also guarded at all times.
Thank you very much, Karen, for having us!