We área staying at the hotel for one night, the following day we are going to Las Vegas. We áre taking a bus , is there a bus stop near the hotel?

Several, but you will need to consult the LA public bus schedule

u can go to W hotel (near from Loews).and take train to go to bus stop

The hotel will likely be able to tell you where to catch the bus. You are at the Hollywood and Highland stop of the Red Line, so you can get to any where from there