I staid at apartment 19 which is clean and basic. The communication was slightly confusing: when I informed that the radiator in the bathroom was not working, I got a first answer from René that he never heard about the issue and would check. The next day I received a message from the agency who manages the listing that the radiator is not supposed to be working since the apartment was split into 2 units. It would be useful to add a heating system in the bathroom during the winter.