Apartment was easy to get to from Schönefeld airport via public transport and easy to find. Check-in was quick and available even though we arrived early and all of the staff we very friendly and helpful. The room was clean and as advertised - lots of space, comfortable beds and plenty of privacy. Everything we wanted to do in Berlin was really accessible via public transport and there were lots of good restaurants within walking distance. My only criticism is that check-out is by midday at the latest, although they didn't mind that we were a bit later than that.