"As long as I'm not making it worse!" They're in front of his door now, which has a sign on the front that says Just knock!--a big change from the KEEP OUT sign he had back at the school so that the Nonsense kids would know they were welcome. He opens it and gestures Benvolio up the attic stairs, which will open up into the warren of his room. He's taken the enormous open attic space and filled it with piles of books and ranks of clothes, fabric, and notions.