Question about tenant number

My house is an extended house and have 3 bedroom house and attic is converted which in total has 4 bedrooms.
All 3 rooms (attic included) are fairly big and one study.
I have put king size bed in both bedrooms and attic reason for telling this just to give a reference or idea about the size of room
Downstairs I have very big lounge and big separate dinner area and big kitchen and wc
I want to know how many people as tenant can live in house.
Can 2 couple and 1 single person can live in house as tenant.