Sketch was amazing, full stop. The location is in the heart of Friedrichshain, right next to Boxhagener Platz area which is filled with wonderful bars and restaurants. The building is an attractive alt bau with a modern, converted interior. Check in was easy and fully automated, we let ourselves in when it was convenient and found our room.
The room was amazing. Stylish with tall ceilings, huge windows, a nicely sized bed, and several thoughtful amenities like snacks, water and beer in the fridge. I can't say enough nice thoughts about Sketch, it was a wonderful launching pad for exploring this part of Berlin and I would certainly come back and recommend it to others.