no key card required by either one
I have never stayed here. Does anyone have any opinion's? Are there elevator room card check'
Hi There Yes I love the Cosmo it is one of the best Hotel and Casino's on the Strip!!! No there are no elevator Room Card Checks. The bars are Great there and the Lounges and you will have a great Time at the Marquee is climbing is your thing
Never stayed at the Cosmo. If I am recalling a previous post correctly, you need a key card to operate the elevator of the east tower (hotel portion), but not the west tower (residences).
no key card required by either one
east tower, facing north and at least 25 floors and up...spectacular view while playing on the balcony 
The rooms are very nice with balconies.
Great restaurants a variety of different cuisines depending on what you have taste for.
Have fun.No keycards required for the elevators.
They have a key entry in the elevator but there are no room checks. From certain rooms there are beautiful spacious patios and a view of the Bellagio fountain and the strip. The Cosmo is one of my favorite hotels for thier contemporary room designs and Chandelier bars. I recommend the restaurant (The Henry) downstairs for breakfast over room service.Whole wheat waffles and giant cups of coffee!
no elevator checks plus elevator right next to front door so your lady of choice won't have to wander around looking for the correct elevator tower.
Its a beautiful hotel
I've been to a few parties there and the hotel has a cool vibe. Although I'm an older fart, it's not really my style. Seems to cater to a young hip crowd. But that's my take as the people I know that stay there are in their early to late 30's.
It is my favorite hotel...Was just there a few weeks ago. No key required to go upstairs-A change when I was there last year as you needed to stick your key in a slot in the elevator to go to your floor-not anymore. Great restaurants.... Enjoy...
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I stay there each November and it is a Helluva nice resort. I'd be more of a regular if their BJ games weren't so pathetic, i.e. mostly 6:5 except in HL room. Still it is a GREAT place to stay. Have fun!!!
Great lounge areas and easy access to rooms with no card checks!!! 
The rooms are beautiful and very upscale too!