I can only add my voice to the good reviews:
Peter is a very friendly host, communication via Airbnb messages with him was smooth and quick, and the instructions for getting to the apartment from the airport were very helpful and clear.
The flat was clean, cozy, and well prepared; and the location is simply unbeatable.
We had light suitcases, so we could easily climb the three flights of stairs. About the bathroom, I personally had to get used to it a bit, especially at night, but it is a very small issue.
I would definitely stay at Peter's place again and highly recommend it.