What a treat the Spa at Mandarin Oriental is.  In a city filled with incredible luxuries and what are arguably the best spas in the world, the Mandarin spa stands out like a glowing star.  \n\nThe amenities the spa boasts are vast and the spa is well appointed.  From heated rock chairs to a giant hot tub (which is really more like a hot pool with excellent views of the Strip - particularly nice at night) to bed-like chaise lounges to crazy experience showers to a gorgeous steam room, (and believe me, I'm forgetting things here) the Spa is filled with things made to delight and relax you.  One can (and will) spend hours floating around the pool, soaking up steam, and napping in the lounge.  Everything is done in elegant greys, dark woods and whites, with fresh water, flowers and snacks dispersed throughout the relaxation rooms.  However, the key experience with Mandarin is the service, and it is nothing short of impeccable.  I think the attendants are ninjas - finish sipping your tea or water, and within seconds they are there with a refill - and I have never made it obvious I was finishing up with anything or asked for a refill.  They are always there with fresh linens, helpful if you are in need of anything, and are truly there to make your experience one that is unforgettable.\n\nThe spa services themselves stand out so far above everything else I have ever experienced that it is almost laughable.  I have been there twice, and thought perhaps the first time was a fluke, but that is most certainly not the case.  I have had the Hammam treatment, which, for those unfamiliar, is somewhat similar to a Turkish bath (though much more pleasant), two hot stone massages, and a lovely facial.  Each experience has been unbelievably stellar, and the not-inconsequential price tag that comes attached is worth every single penny and then some.  (I don't think I've ever tipped higher anywhere... and I tip pretty well as it is.)  The massages I have had were basically transcendent, and I'm hard to please - it was as though the therapist read my mind, or perhaps he was simply supremely talented at reading body language!  I have zero desire to go anywhere else, possibly ever again, for a massage - it was THAT good.  I'm a serious spa buff and have been most places on the Strip, as well as an amalgam of spas in other cities, and in no way, shape, or form have I ever had a massage that even approaches this level of amazing.  I know it sounds sort of silly to moon on and on about a massage, but words are inadequate when it comes to describing how truly incredible BOTH massage experiences were.\n\nMy facial and Hammam treatment were both out of this world as well, and I would repeat either of them in a heartbeat.  The friends I visited with our first time there gave similar reviews - all 3 THRILLED with the Hammam treatment and all in love with their massages.  Not bad... not bad at all!  Mandarin has definitely attracted the top talent as far as their spa staff and therapists go.\n\nI also visited the Salon as well for a cut and color and could not be more pleased.  Once again, being indecisive about what I wanted and difficult to please (which I realize is my own fault most of the time!), I was thrilled that my stylist REALLY listened to what I wanted and then basically finished the job by reading my mind and giving me exactly what I wanted but didn't even know I wanted.  Pretty sure I'll be flying back and forth to Vegas to get my hair done from now on. ;-)  My stylist was Zhane and I can't recommend her enough.\n\nAll in all, I think I may have found the consummate spa in Vegas.  Prior to now it was always a vacillation between the Encore for the amenities (and not shabby services) and the Four Seasons for their excellent services.  Mandarin has it all - a great relaxation area and easily the best services in the area, along with an attentive, personable staff.  What's not to love?