I just googled  "2 bedroom suites in las vegas"  Some of the results Cosmo, Mandalay Bay, Mirage Aria, Trump.

Very comfortable, especially if you plan to spend a lot of time in the room.

Great place, on the Strip and right next door to Aria, and yet not a casino hotel itself, so the intensity-level is a little lower.  It's quickly become my default choice for my hobby activities.

Hmm, not sure exactly how compulsive this list is, because I know of another, and as well condos that accommodate visitors looking for space and 2 or 3 bedrooms. As always it depends on your budget, and usually spending that kind of money comes wit amenities, i.e. some host a huge jacuzzi as big as a pool, there is a Grand Piano, Fantasy Suites at the Palms to each their own, some come with a butler, VIP to exclusive parties etc etc etc.

Have fun on your trip!

LOL Sorry, guess it would help to name a few:

MGM Mansion
Palms & Palms Palace
Downtown Golden Nugget
Hard Rock
Wynn
Encore

Sorry I was just reminiscing, I know there are many, in fact I wouldn't be surprised if they all did. Call concierge I suppose.