If Sam was to do the entire motel, it could easily take a month or more if he wanted to cover every possible place that littles could be. For his purposes, he will stick close to Dean’s room and look at the closest hallways. He’s checking for signs that anyone lives at the motel; small bootprints, signs that the inner wall has been modified to be more accessible, stuff like that.
He won’t ask to stay in a motel after their hunt is done unless he finds trace of his people.
(originally sent to @nightmares06)