Stayed three nights here, and was given a free upgrade to a bigger room! Location is extremely convenient with U and S-Bahn within a short walking distance. There are also many restaurants and a supermarket nearby. Klaus was prompt with his replies and the check-in process was convenient.
The room was clean and overlooks a pretty courtyard where there is a restaurant but it closes around 10.30 pm and it is very quiet after that. There is heating and air conditioning which is great as we visited in June where it tends to be much warmer in the daytime and colder at night. The heated floors in the bathroom are also a plus! Love the artwork/photographs in the house and there is also a collection of books in the bedroom.
We had a very enjoyable stay here in Berlin, thank you!! :)