The Venezia Tower is a two-year-old addition to the 7 year old Venetian hotel, and has a higher caliber of service and amenities than the main Venetian. I didn't really check out the rest of the hotel, so this review is about the Venezia Tower mainly. I found it to be a great value for a high end experience.
You enter the tower via a separate elevator off the lobby. At the 10th floor, there is a separate concierge, outdoor pool garden and the Bouchon restaurant which is great (I had been to the one in Napa Valley and loved it.) This 10th floor also connected to the main hotel via a skybridge. One gripe is that from the 10th floor, you have to walk about 50 yards to a second set of elevators to get to the rooms.
I was very impressed with the decor, both in the common areas, and in the rooms, which were spacious and nicely appointed. The rooms were very spacious with a sunken living room separated from the beds. The view out the window could have been better (it was of a parking lot). The shower in particular was top notch.
In the morning, the bellman were very helpful in getting me a taxi to the airport, which took about 10 minutes and cost $15.
Overall, this is a very luxurious, 5 star resort for a value price (our suite was $160 including tax). I'll go back again for sure.