w pomieszczeniu in English:

If you have an indoor swimming pool, you're probably pretty rich.

We've got an indoor swimming pool.

Since it's an indoor plant, you shouldn't keep it in the garden.

In winter, we go swimming at an indoor swimming pool.

Do you like indoor sports?

I like playing basketball indoor

Because of its extreme climate, Astana offers a lot of indoor entertainment.

Nancy enjoys indoor games.

The advent of indoor tanning salons now allows Canadians to sport a sun-kissed look all year round.