Felix is a young, extremely easy-going guy who made all contact and check-in/check-out super easy.
He's keen to offer advise on the area and Berlin itself. He provides little guides and information around the apartment to make things easy for guests. He's also very responsive if you need anything.
The apartment is a work in progress that he's fixed up himself, so it won't be for everybody. But for a young traveller like myself, the place and the area will be great. It has everything you need, and the location allows you to get in touch with authentic, multicultural Berlin.
Felix also encourages you to treat the place like your own while you're there, which was great.
I can highly recommend.