I'm actually pondering this very decision for an April anniversary trip. I've been to Vegas several times, but it's my wife's first, and I want to spoil her a little bit, but in the "reasonable" price range. We have a two night comp stay at Aria from myVegas rewards, and my choices are to just book two more nights there, through a Virtuoso booking, and hope they'll combine the two and upgrade everything, or to have the other two nights at Wynn or theHOTEL with FHR. Spa is important to her because she wants a massage, but I know I'll end up paying a fortune even after the credit. The most important feature for the room is the bathroom; she wants as big a tub as possible to soak in. The price point is especially appealing at TheHotel, but the amount of walking isn't, and we'll already have the South strip covered from Aria... FHR is pricing about 126 for TheSuite and 179 for a Wynn Resort King (170 at Encore, actually).

An unrelated question still suited to this thread: Can I book with my Platinum card and then, ultimately, charge the room to my Barclay Arrival instead? I'd like to use some of those points to make the room "free" if I can. Using Arrival points, I have a higher comfortable maximum price point.