I seen that the cosmopolitan lanai suites have a hot tub. I've searched on here and on YouTube video tours but it's hard to tell how private these tubs are.  If I'm thinking correctly, they are walled off from the bamboo pool but would be pretty visible from above terraces.  At night, are the lights dimmable? Or do they stay on.  
I have one for this Monday and am trying to decide whether to plan a little fun! Lo

I rented one and did a photo shoot and had a ton of fun there, a few years ago.  I highly recommend them...just be careful on the stairs that lead to the bedroom...and be aware that the bed is only a queen sized.

just sayin

Thanks everyone. Yeah the Queen size bed is a bit of a bummer but the rest of the room should provide for plenty of creativity!  It's good to know the hot tub is private enough. I know that from Vdara you can see the lanais  (with binoculars, of course. Lol)  but wasnt sure about the Cosmo or neighboring terraces.   Now time to make some plans