The bath is next to/in washbasin.
next to
There is/are two chairs in the kitchen.
are
There isn't/aren't a/any windows in the garage.
aren't / any
The fridge is under/behind the kitchen cabinet.
under
Is/Are there a/any chairs in the kitchen/bathroom?
Are / any / kitchen
Is/are there a/any bed in the bedroom?
Is / a
There is/are a bath in the bedroom/bathroom.
is / bathroom
There aren't/ isn't a/any desk in the living room.
isn't
The TV is on/in the table.
On
There isn't/aren't a/any armchair in the living room.
isn't / a
There is/are a sofa in the living room.
Is