What is a collective noun of bedroom?

There isn't a common collective noun specifically for bedrooms.

While we might use phrases like "a suite of bedrooms" or "a collection of bedrooms," these are more descriptive phrases than true collective nouns.

A true collective noun names a group of things, like "a flock of birds" or "a herd of elephants." Since bedrooms are individual spaces, there isn't a single word to describe a group of them.