Yes, Forgotten Hollow is too small, and usually, by the time I might need more houses, they are taken by townies. Although, I usually live in either the Vatore house or the empty 30x30. I've not had many generations yet, as I'm too busy playing several other households too. Otherwise, my vamps live in any world (although Brindleton Bay is not a fav because of all the sick and dirty pets around).
I've pretty much only played Sulani since release. I'm a tad disappointed vamps can't tan, though, even with "normal" skintones (means they can't do the Beach life aspiration without cheating) :# Although, I guess that makes sense in a way.