Three bedrooms have a private bathroom. The remaining four rooms share three complete bathrooms - 3 showers, 3 toilets, 4 washbasins, 1 bathtub, 1 bidet, and 1 urinal.
As couples usually take ensuite rooms, it's typically just 3-5 people sharing those three bathrooms. All bathrooms can be used privately. Very occasionally, two people might use the mirror in the larger bathroom at the same time - more by choice than necessity.