Our experience with the guest house was fine. It is a fairly simple but reasonably well cared for room. We stayed with 3 people and the room was just big enough for us. (Obviously smaller than the pictures that are taken with a wide lens) The beds were comfortable and the pillows were good too.
There is room to store important stuff and you have enough space to put your stuff in the bedroom.
You get a pass to enter your room and to enter the building in the evening. At the entrance you also have a gate, which closes after 6 o'clock. Here you have to fill in a code that you are told in advance.
The showers were reasonable but it was difficult to put your things somewhere without them getting wet. We recommend you to bring your own soap, shampoo and conditioner because it was not present in the bathrooms. Furthermore, you have a hair dryer in the bathroom that you can use.
If you go to the toilet in the evening I would not use the hand drying machine because then the whole pension will wake up.
It is quite noisy in the guesthouse so keep in mind that between 10 and 8 you are a bit quiet. The neighbors like to call the police quickly.
We have not spoken much to the staff. From what we have gathered, they were polite people. Communicating was unfortunately less because of the language barrier. Furthermore, we have experienced that the staff has been in our room to change our trash without asking.
The establishment is certainly situated in a beautiful and convenient location. The metro stops almost in front of the entrance and is only 2 stops away from Alexander Platz. If you want to walk you will need about 30 minutes.
There are plenty of restaurants and pubs in the area to enjoy a beer in the evening or eat somewhere nice.
It is suitable for longer periods and for transit stays.