We stayed a week in Jon's apartment and really enjoyed our time there. Perfect for 2 people - clean, lots of light (even in mid-winter), and in a great part of town. Easy walking distance to some great bars around Rosenthaler Platz and Prenzlauerberg. Didn't get to meet Jon - he was away at the time - but he arranged for access with a friend with no problems. Hopefully will get to know him next time - Jon's place has a positive vibe that must be all to do with him. Planning to come back and will definitely try to stay here again - highly recommended.