We had 5 nights in Bellagio over last weekend.
Early one morning we walked up through Venetian, Palazzo, Wynn and Encore. They were all relatively quite but Encore was dead. I thought it was a nice hotel though and would stay there next time we go back over. (Bellagio was great though so it'll be a tough decision)
OUr only problem with Vegas is the distance from the UK. It's a very long trip for us.
g