Should I use inheritance or composition?

Question

I would like to keep this one short. I build a HouseA that has two rooms, say BedRoom and StudyRoom, both deriving from a base class called R

Answer 1

Why not use roles to achieve this:

House A has a Bedroom
Bedroom does SleepingArea
House has a Studyroom
Studyroom does ComfyArea

House B has a MasterRoom
MasterRoom does SleepingArea and ComfyArea

The easiest way to get roles is to use Moose.