Take Swift Learner, kill lots of enemies, complete lots of quests. Do Swift Learner and Well Rested stack? If so, get the room in Novac.
If you're asking for an exploit, I think they have all been patched.
People on XBox can do this --
Spoiler In Dead Money you get experience for dying. Honest. If you have a companion you get experience for both of you dying. It's a chore and not really worth the bother, but just find a radio, save and go get your head exploded. You'll get XP. Save, then go and die again. Over and over and over...
I think you said you were on PS3, though, so that doesn't help you.