What is missing here is a proper description to manage expectations. The apartment is an old Hostel. There are four rooms and two bathrooms. So there is quite a lot of space but it is not a cozy apartment that invites to spend time together (no livingroom for exsmple). Unfortunately the maintenance office of the building is in the same apartment so sometimes there are caretakers in the house. Don't expect to have 100% privacy all the time. A few ammenities need fixing (fridge, oven, leaking shower and toilet), however that did not pose such a big problem for us.
The location is very central, which is great but comes at the cost of noise -- sleeping with an open window might be difficult.
The apartment is located in the top floor and there is no elevator.
If you book this apartment, just know what you are getting. It is a good price and for a big group it can be very practical.