I love nothing more then being able  to relax in a hot tub with my woman once the festivities are done.  I booked a nice suite on my most recent Vegas trip but was disappointed in the size of the tub.  Any recommendations on which Vegas hotels (preferably on the strip) have the best spa suites?

The tub is awesome at Elara! actually, the whole room is great!  
Check out the link below, fast forward to about 3 minutes to see the tub!  

Monte Carlo has a nice big tub

Cosmopolitan has two different tubs I have seen one was longer with more room.
The other was more square but deeper tub.Both were nice.
New York New York hotel has a big jacuzzi tub in the room.
Elara also does as well and is very nice.
Luxor while this property is older it also has a big tub in one of the rooms.
Mandalay Bay has a suite with a huge tub and shower.

The Japanese soaking tub in the Terrace One Bedroom has an amazing view on the Strip side.

They can easily fit 2 people and the suites are large and reasonably priced.  

Thanks for all the suggestions and to Robbin for the slide show.  It's much appreciated.  Ironically my last suite was at Monte Carlo but I should have booked a Spa Suite instead of the Monaco Suite.

I always like a nice jacuzzi tub.  What's the rest of the hotel like, though?  How do the rooms compare in general with the typical upscale Strip hotel/casino (Aria, Cosmo, Wynn, etc)?

If I were to do a multi-day date there, would my guest and I find all the typical amenities?

I have enjoyed the jacuzzi suite at Elara and the Monte Carlo, and the Cosmo has some fun ones too. Let me know if you want me to join you!!!

My latest blog had a cute photo of me in a bathtub in Vegas… It was at the Rio.

Excellent choice! The hotel is beautiful, clean and quiet.  
Entrance inside Miracle mile shops
Nice cozy bar / lounge outside the entrance  
Guard scans key to enter elevator area
Rooms are great! The link i posted above shows the entire suite  
Cozy Tub with  
mirrors surrounding it  there are two pictures of this tub on my site as well
I really enjoyed my visit there  Full  roomy kitchen and living area separate from room  
Big windows Big tv !  
Excellent views - modern comfy deco
I think you will like it!  It is like a one room apartment - they also have two room suites ;-

not a hot tub, but their showers in the standard rooms are really nice.  big shower and a tube in the same enclosure.  so can jump in and out of the tub to the shower easy.  And their rooms have a great sound system to plug in your phone or laptop to play music.

They have over sized tubs in their corner suites.  I can personally vouch that they will fit three people.

Good info..thanx!