Stephen is a fantastic host! He is extremely accommodating and an excellent communicator - I cannot commend him enough on this! The flat itself is large and spacious - it was 90 degrees while we were in Berlin, but the ground level flat was cool and airy the entire time. The neighborhood is also great. Right between Kruezberg, Neukolln, and Treptower you have plenty of options a quick bike ride away (that said - you are in a bit of an S-Bahn/U-Bahn desert which is a bummer if you are visiting in the non-nike friendly months). My only complaint was with the amenities. Stephen's house is not set-up for those looking for a homey visit. There are no cutting boards (for example) and it was very difficult to cook. While there were plenty of towels, they were also all hand towels and made showering a bit of a wet affair. The pull-out beds were also not the most comfortable, but nothing a few Pilsners can't handle. This isn't a big issue if you are looking for 72 hours in Berghain, but it did make tryin got have quiet dinners at home a bit of a challenge.