Stayed here for 4 nights and really enjoyed it. The apartment is small, but is well designed and has everything that a traveller could need for an easy stay, you can tell the host has put a lot of thought into this. Bed was super comfy, nice linen, TV, music player with CD's, good kitchen appliances, coffee pods and great tea selection, umbrellas for when its raining, two bikes to use to get you around town, a nice small private area to sit outside...
Situated in east Berlin there is a small park outside the front door and the river/dock area a 2 minute walk, there there is a cool bar with music and a walking path. Its a 10 minute tram ride to a great area to eat and about 20-30 min train to get to central Berlin.