Mary is an experienced host: she will let you in and show you everything right away, which gives us freedom. You get the keys, a quick tour of the kitchen (and your on shelf on the fridge!), and all the house rules on the spot. the room is great and I would definitely love to come back to it sometime soon.
quick note: remember that it's a sunny attic, with proper curtains and blackouts, but it is upstairs. quick and easy way up, but you should keep that in mind, depending on your mobility status.