Tough one.
If there is a lockable door protecting their apartment, I would also say Entire home.
The apartment is seperate, 100% private bath, bedroom and living area.
That they pass through your main door does not deter from the fact that it is an entire place.
Apartment buildings have hallways leading to apartments. These hallways are used by the public, your house is similiar.
It is important that you maintain respectful indepence of the guests as they come through your entry door. Try to be absent or limit greeting to "Hi" as they pass.