Our party of 4 couples had a fun weekend at the Bellagio, but there are definitely items needing some improvement.
The good: great room with a spectacular view of Vegas, although it was a hike from the elevator. Spago was just amazing - wonderful food and ambiance, but the waitstaff forgot to bring the birthday cake we ordered - at our Saturday night dinner they brought a baby cake, single serve, which was not what we ordered, but then they delivered the cake they forgot to the birthday gal's room on Monday. Just what a couple wants - a cake all to themselves! The spa/salon is spectacular. Wonderful therapists and beauticians.
More not so good: the check-in/check-out procedure is horrible. They have one line for both (they need an engineer to fix that mess). They have kiosks which will supposedly let you check out without waiting at the front desk, but they never work.
So we waited almost 30 mins in line to check out. Grrrr. Not a pleasant way to end a trip.
They need to improve their air filter system to minimize the overwhelming cigarette smoke smell that permeates everything. That got old quick.
Finally, they should have refillable water stations. Vegas is really really dry, and it was surprisingly hard to find water.