My wife and I stayed for four nights, and wish we could have stayed longer! The flat is quiet, clean, nicely decorated, and very comfortable. The kitchen is well-equipped with everything you would need for preparing meals. The bed is very comfortable, and we slept really well. This is not a generic hotel-like Airbnb, it's actually lived in, so it's like staying with a friend.
Self check-in and check-out were very easy, and the host was very responsive. He helped with questions we had about heating and also gave us a very good restaurant recommendation.
The location is excellent, as it's just a few minutes' walk from a metro stop, grocery stores, and restaurants. You can also reach the old town in about 20 minutes of walking.
We would definitely stay again!