The beast will all live in the same house as one another. This is the house. And within the house, the beast have their own "wing" so to speak that has their bedroom, bathroom, living room, closet, and outdoor balcony. But their are a few rooms they must share like the kitchen, library, foyer, backyard, etc.
And for the beauties, as it says in the intro page the witch moved the beauties all to New York for a "fresh start" but they do not live in the same house as the beasts. Oh, no. But, they do live very very close. You see there are smaller houses close to the mansion where the beasts are living which is where the beauties live. A neighborhood so to speak where they can live by themselves or with another beauty if they would like. And like regular houses it has everything they would need/want. With addition to a walkway to the mansion.