Martina is a very nice host. She was very welcoming and communicative before and during our trip. The flat is in a very good location with close links to U-Bahn, S-Bahn and shops.
The flat was initially fine, but a few issues occurred during our stay. The shower is quite old and not attached to the wall (making showering difficult) and the toilet started leaking its contents onto the floor during our stay. This made the the bathroom smell quite bad. Also, we had six people staying in the flat and the beds consisted of one double bed, a sofa bed and a set of bunk beds. This wasn't really made clear on the booking, but wasn't a major problem for us.
During our first night, the residents in the flat below us were loud, causing other residents to phone the police regarding a noise complaint. Martina phoned us and asked us to go downstairs and resolve the problem. We don't feel that it was our responsibility to do this and made us feel uncomfortable.
Overall, the flat is in a great location, and Martina seemed a very nice host, but we were disappointed by the bathroom facilities. If these were changed, we would stay again.