We had a crate for Louie when he arrived as a puppy but put it away when he was bigger and no probs with Jasper.
However, on holiday the dogs were not settling that well but coincidently we'd brought the crates out of the car on night 2 and they opted to sleep in it covered by a throw so it was a lovely cosy den.
Since we came home I have put the crates back in the conservatory that they use, plus they have a ordinary basket but 9 times out of 10, they use the crate and the doors are open so they can choose. Even if they just want time out, they often slope off back to bed in their crates so it has got to be because that is where they feel at ease. They could equally choose an armchair, settee or a bed in the kitchen but the crate beckons.
Can you borrow a crate from somewhere to try it out? If it doesn't make anything better you haven't lost anything.