I haven't stayed there myself, but whenever i visited Las Vegas, I liked going there for a few hours. But this is what my co-worker had to say about Venetian.
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We had a AMAZINGLY rotten experience at the Venetian. The water went out for a day and a night, and the hotel was just ridiculously unhelpful. ("Fancy bottled water is available in our gift shop for $3.00 a liter, sir.") No shower, no toilet, and no sympathy from anybody who might have been able to help. Never again, ever.
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Make your own decision.
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