Jan is a great host and has a very nice place. The room was comfortable (I had no problem with the loft bed, but it is better suited for smaller and/or "limber" folk), with the window looking onto courtyard trees at the 4th story level -- so, no street noise, just birdsong; the bathroom new and spotless. Jan was thoughtful and friendly. The neighborhood, Mitte, is super nice, lively and artistic, tons of shops, restaurants, and bars, without feeling pretentious, and just 10 minutes' walk from the Berlin "Dom", the retro space-age TV tower, and other Berlin sights. I really enjoyed my stay.