Corrected entry: In season 1, episode 7 (Kiss and Tell), Lorelei tells Rory to go to the bathroom so it won't look like they were coming back to the living room (where Dean was) together. Rory opens the door in the small hallway leading from the kitchen to the living room and goes in. We assume it's the bathroom. Then in this episode, Rory tells Lorelei to get rid of a box in which she had put all of the things that reminded her of Dean. Lorelei agrees but when she leaves Rory's room she goes to the same place in the hallway where the bathroom presumably was and opens the door to reveal a coat closet, not a bathroom. It's the only door there. This space is confirmed as the coat closet in "Love, Daisies and Troubadours" when Rory finds the Dean box.