The room may fit (very) young guests, but does not fit adults for many reasons: It is a very tiny room, to access the bed you must climb a ladder while holding a rope in order not to fall (this is a real challenge for adults who have to use the washroom during the night) and you have not the most basics to prepare even a cup of tea or coffee.
On the other hand, Federika herself is outstandingly helpful and forthcoming. I have met but few landlords with such remarkable human qualities.