The private accommodations are sorted by the surnames of their owners, so no conclusions about the quality or the amenities can be drawn from the order of the rooms or apartments. The hotels are also sorted by name.
In this list there are only such accommodations with more than 20 beds. If you and group can also do with a smaller accommodation, please feel free to check “Hotels“, as well.
By the way: Most hotels and privat accommodations with more than three rooms have no vacancy calendar, as one calendar for the entire house would show free rooms if just one room was available (which is of no use for groups). And one calendar per room would be too much and too confusing.