Kerstin is kind and helpful person but if you don`t want to be negative surprised, ask Kerstine before arriving, what is included in the price and for what you should pay extra money becouse we had some unnecessary misunderstanding.
If you want to go to the bathroom you should be very agile due to stairs which are like in a submarine.
Generally speaking the place is quite good but rather for young people for a short time. The guesthouse is located about 10-15 min from the station which is in zone 1.