Klaus's place is nicely located with the S+U bahn, supermarket and food outlets all near by. His apartment is very clean and tidy. If you are looking for an affordable place that easily allows you to access to the places that you are going to visit, look no further. Communication with Klaus was perfect as he constantly provides information on how to get to his apartment. Overall it was a pleasant and great stay with Klaus. Would come back to his place should I visit Berlin again.