The ghost at the hotel

You're on your way to New York from California and you stop at a hotel for a month. You thought it was crazy too but that's the only time they offered in this hotel. It was one floored and all the walls were gray. Well everything was gray. Just different kinds. You were there alongside 5 other people. Weirdly enough there were only 6 rooms. You drop your things off at room 6 and lie in bed trying to think of something to do.