Honestly this hotel is overrated.
Suites...1 star
Smaller than what we get at TheHotel at Mandalay Bay. Quality is not that great at all. It is definitely an older hotel that is showing its needs for some major renovations. Our suite was overdue for some major repairs! First, the door couldn't close so we asked to be transferred to another suite. Instead they made us wait for someone to come and fix it and if it couldn't be repaired than they would let us move. We had to wait over 2 hours. Second, there was putty wherever there were pipes leading into the walls in the bathroom. They really couldn't just change the wall paper as well? Oh and don't spend the extra money for a strip view, it is horrible! We've even had a strip view suite at TheHotel and even though it's at the other end of the strip close to the airport, we had a much better view there than we had at the Venetian. Too much construction going on!
Check-in service...3 stars
She seemed to be a bit robotic. Her customer service wasn't terrible but it wasn't great either.
Bell service and Valet...5 stars
Everyone was extremely friendly. Our luggage came to our room quickly when we arrived and bell service arrived quickly to pick up our luggage when we were checking out.
Dealers, Cocktail Waitresses, Pit Bosses...5 stars
Mandalay Bay has got nothing on Venetian when it comes to customer service in the casino area. All the dealers and pit bosses were so friendly! Cocktail waitresses constantly came around and asked you more personally if you would like anything to drink. The Casino itself was way more smokey than a lot of the other hotels, they should consider better ventilation.
So assuming you haven't stayed anywhere newer or bigger you may find this hotel to be extravagant, but being a regular to Las Vegas and having the opportunity to stay elsewhere, well...I'm having a difficult time giving this place 5 stars.
The only reason I would stay here is because of the Grand Canal Shoppes, The Shoppes at the Palazzo and the friendly atmosphere in the casino.