This is the best hotel experience I've ever had in Vegas.  My fiance and I travel to Vegas about twice a year, but had not yet stayed at the Aria.  Upon checking in, we received a complimentary upgrade to a penthouse sky suite from a standard room!  On a weekend!  For three nights!  The room was unbelievable.  There were two bathrooms, a kitchen, living room, and dining room.  We had friends also visiting Vegas and, honestly, the four of us had more fun celebrating in our room than on the strip.  The master bath was enormous and featured a large sinking tub in the middle of it, a heated toilet seat with a built in bidet/dryer, and a huge glass shower with a steam-room feature.  The Aria hotel is beautiful and chic, conveniently located, with many delicious dining options (we ate at Julian Serrano, Javier's, and and Blossom- all fantastic), but it was the top-notch service we received that made our anniversary unforgettable.