I stayed for a good week at Oliver's apartment and had a great time. The neighborhood is lively and saturated with great coffee shops, there's a sense of community unique to this part of Berlin, and Oliver is a very friendly, accommodating host. The apartment is quite basic though and if you are looking for comfort or a well equipped kitchen, you may get disappointed. There's no wallpaper or color in your room, instead you will find a naked stone wall, naked light bulbs, and a coal oven instead of central heating However, if you like an authentic experience of living in an old, original, no-frills apartment, you have come to the right place. I would stay there again, especially when traveling on a small budget.