Stayed here to celebrate our son's 21st birthday and loved every second! Our room was huge, with a separate living room and dining room. But the first night we headed off to bed and were kept awake most of the night by the what sounded like a train running through the walls! It was really loud and we could hear it even through earplugs! Next morning we decided we needed to move so we went to the front desk to explain and, as expected from Four Seasons, the service was impeccable. They dealt with the issue straight away, offering us an alternate room (albeit smaller, but that was OK) - the upside is that it had a nicer view of the strip and they adjusted the rate for us, as well as giving a discount on the price of the first night's room because of our lost sleep.
While we relaxed by the pool they took care of moving our luggage and even the contents of our refrigerator to our new room, then called me to let me know it was ready.
The pool area was very relaxing and everything about this hotel was great. Despite the issue with the first room we were given, they fully deserve the five stars since they dealt with the problem in a professional way and were genuinely concerned to ensure we had a good stay.
On checkout, a manager came out to check that we had enjoyed the remainder of our stay. This kind of excellent service is what would keep us returning year after year to any Four Seasons hotel - they are all excellent, wherever we go in the world!