This apartment is one of the best apartments I have stayed in. The space is really big and stylish, with great artwork and games placed all around. The apartment sleeps 10 comfortably, and can squeeze up to 14-15 people if need be. The apartment was clean, the showers/bathrooms were great, and the loft-style is perfect for big groups to hang out together. There was also a minibar style fridge that was filled with drinks for purchase (2-3 euro) in case you want something quickly without leaving the apartment. The area is not too far from most destinations in Berlin and there are some great places to eat/drink nearby (Cab Slam, Azzam, Gel Gol, Sofa Bar, etc.). It is a 4 story walk up, but it's not too bad at all. Plus, the apartment is in a very quiet neighborhood. Sebastian did take a 150 euro deposit on arrival (for potential drinks, key loss, or damage), but he returned the money as promised when he verified that his apartment was left in good condition. I highly recommend renting this place. The only downside was that he was about 2 hours late in cleaning the apartment for check-in, but he said that it was due to his cleaning crew getting ill that day.