Martin's place is a real oasis in the city. Although centrally located, quiet at night and day. It was clean, has great beds and a good bathroom. We were pleased with the communication with our host and the easy check-in. There's al Lidl nearby, two metro-stations at short walkingdistance and a great Indian streetfood-place at the end of Hafenplatz, where you can pick up a main course for as little as 7 euro's.
A very good studio if you want to stay in the centre, yet value some rest too!