Killer rooftop lounge, looks fantastic. It's on the 3rd floor, you can reach it from the front door off of Jefferson, taking the elevator or by going up the stairs on the backside of Cityscape by the Tilted Kilt. Pool is behind the bar, though. They had about 5 beers on draft and some mixed drinks were 5 bucks, but most drinks cost more. It was getting cold when I went, so they had propane heaters up.
Lustre closes at midnight, even on Saturdays but they have an indoor bar that closes at 2am (I think) on the 2nd floor. I would make the drive here from Scottsdale or far out in the East Valley, this lounge is a real gem. I'd try to enjoy it before the summer heat hits.