Sterni & Marysia were wonderful hosts, they were very friendly and helpful, with good recommendations of places to visit (maps and guides you can borrow) also good knowledge of Berlin, if you want to know anything I'm sure they can help.
The apartment was great, stylish, clean and tidy. My room was just as you see in the pictures, clean, bright and comfortable, a good place to come back to after days/evenings exploring Berlin. I felt relaxed and at home there.
All together my experience in Berlin was superb. No complaints!
A recommended booking.