My friends and I scheduled massages at Canyon Ranch inside of the Venetian hotel. The actual massage was wonderful. The waiting room was packed with people and while quiet wasn't exactly a relaxing experience. Like I said though, once I got inside of the massage room I was in heaven.
This has to be the best and largest spa in Las Vegas. It's located inside the Venetian Hotel and features veriety of services from massages, working out area with personal trainer, exercise classes, rock climing wall, and a salon. Everyone there is everyone and helpful. If you want to pamper yourself with spa treatment I recommend Canyon Ranch Spa.