Thing to note: 1) the shark (& other huge fish) tank is cool. The pool has been described by many reviewers but we had a different experience.
Things that made it great: clean and quiet (on the 24th floor away from Fremont St) coffee/water and daily fruit/pretzels available at elevators easy access to everything downtown a car rental agency right IN the hotel least smokey (best air filtration system?) casino with great dealers for entry level players of BlackJack and helpful security. We very much enjoyed the club level King room in the Rush tower.