Combined Properties

I would like it if we could book multiple properties under a single quote, or have multiple properties at the same "location" governed by the same set of rules. For instance we have 8 separate vacation villas that are all a part of the same "compound" right by the beach, and the entire property has the same booking rules, etc, though pricing is different for each villa. Also, it would be cool if we could rent out the entire property as a virtual 9th unit, that would automatically book out all 8 units for the 9th as a kind of package.