Comfortable big apartment in a great part of Friedrichshain - walking distance to underground (10minutes) or to suburban trains (5 mins). From both you can get yourself easily to sites and museums. The area had lots of restaurants, cafes and bars - we loved the area!
Apartment was on the 4th floor (no elevator) so something to bear in mind if you're traveling with a lot of luggage. Bed is comfortable and kitchenette has everything you need to make yourself tea/coffee/breakfast. Supermarket over the road for supplies.
We would definitely stay again!