Roberts place is so amazing and built with so much creativity, there is skylight in the lobby area for the day time and sensor based lighting for night time . The room is very spacious and has a happy vibe. The room has everything you need, including air conditioning for one of those rare hot days. My most favourite spot was the terrace, it looks an open air cafe with deck chairs and patio swing.
Robert is a great host, it felt like we were visiting an old friend. He is welcoming and helpful. He told us everything about the neighbourhood and Berlin in general.
I would recommend everyone to stay at his place, he indeed is a super host.