Bringing a new cat home - quiet spare room or in with the family?

[SunsetDream]

I keep reading about introducing the cat to a quiet room so they can escape/ hide.

We have a quiet room, so we can but bed/ food/ litter tray in there for a while (or should the litter tray go straight to its permanent place?)

But it's across from the hall, so she would need to cross the open stairs to get to the family living room.

Or should we set some things up in the family room so she can get used to the family (although not disturbing her unless she approached)?

I can probably work out the answer, but want to ask the experts!

When Seniorboy came to live with me, he was a fairly pale and wraithlike creature but he was getting on a bit even then so we had no plans to fatten him up - just gave him the recommended (or treats ). Or both. *
*
Within a few months though, he'd put on a lot of muscle from playing and eating and looked a tad different.

See what the vet says during the consultation, offer good food and check the worming status etc. Unless the vet has concerns - and if everything else seems fine - I'd be tempted to see how it goes for a bit, though. Some cats are naturally rangy.