We have a large airing cupboard. Unfortunately, not only does it house the hot water tank, but also the flipping cold water header tank . Our house has two quite discrete roof spaces, separated by a large lead valley. The rear one, where the header tank should have been installed, didn't have a loft hatch at all when we moved here, so at some distant point in time a previous owner must have thought the airing cupboard was a good place to house it . Consequently the hot water pressure is very low, and if anyone wants a bath at 7.00pm, then they really need to think about turning the taps on at about 6.30 or even earlier .
DH has since created a loft hatch for this roof space, but the work involved in relocating the header tank is something neither of us have ever felt enthusiastic about.
So, with two tanks in the large cupboard, the only usable space is one shelf in between the two of them, onto which are crammed all our spare towels, and a few odd tablecloths and cushion covers right at the back.
Bed linen is kept in the under-bed drawers (amongst other random bits and pieces)