If it were me, I'd stick to something in Henderson. Like Sunset Station which was recommended. Or Green Valley Ranch. If you don't want a casino hotel there is a Hampton Inn and Suites as well as a new Hilton Garden Inn near Sunset Station. The Fiesta Henderson would also be an easy drive to Boulder City, but not quite as nice a property as the others.

I would avoid the Southpoint and the Silverton. Their location takes you through allot of the high traffic areas. Anything with a Henderson address will give you an easy drive into Boulder.