During my trip to the WSOP, I stayed at Ceasers Palace. I played cash games several of the days, when I wasn't too busy there for the conference I was attending. Ceasers has a big room, with quite a few games. The biggest games are 5/10 and 2/5 no limit. I liked the games, because there is no maximum buy in. You can walk up to any table and put down as much as you want.
I played some 5/10, but mostly played 2/5. The 2/5 tables had plenty of money, generally around 15K or so. The quality of play was pretty high, a lot of locals playing real solid and staying out of each others way. I always try to spot the locals, because a lot of them play similarly and there are usually better targets.
There were some folks there for the WSOP. Some were good and some were awful. However, there really weren't enough drunk tourists and yahoos around. A few, but not enough to make the games really good. My play was pretty much the same each day, build up a nice profit, but have too much to drink and end up giving a lot of it away. Same old story.
If you go to Las Vegas, I would recommend the room at Ceasers palace. However, I suspect you can find softer games. I liked the no max buy in, but I am sure there are similar games with looser worse players.