I feel like such a super cool guy (as if I wasn't already) when I step into Cosmo because it's contemporary, modern, and trendy. Even driving into The Cosmo feels cool!
I've never stayed at a room, but the suites are very spacious and the balconies always provide a really nice view with a weird desire to jump over the edge. Am I the only person who gets that feeling? Yeah? Yikes.
Anyway, The Cosmo is full of cool lounges and bars to hang out at. Other lounges and bars in other hotels just seem to be overlooked and ignored. The Chandelier Bar is probably the most popular one to kick it at. There's another one at the entrance of the strip by Bellagio, but that one turns into a little mini club at night. Obviously Marquee provides residency to some of the biggest names in the EDM culture right now, so you know there's almost ALWAYS someone to see (like Kaskade)!
If you aren't clubbing or seeing a show in Vegas, then at least stop by Cosmo on your random walk up and down the strip so at LEAST you feel like you're doing something with your time.