After joining the Mavericks, the team gave him a hotel room during a very brief training camp. However, once the regular season got started, NBA salary cap rules blocked the team from providing housing for West. He said he tried to rent apartments around North Texas but failed, because they were either too expensive or he wasn't allowed because of his legal troubles.
So West would get a hotel room when the Mavericks were on the road, but when they came back to Dallas late after road trips, he had no place to stay. So rather than getting a hotel room for just a few hours, he would sleep in the American Airlines Center locker room area or park his truck in the arena players garage and rest.