Booked via telephone a couple weeks ago. I used mine last night/today for a free Saturday night at Caesars (!!!), and arrived around 11pm. When I was in the air on the flight from the east coast, I got mail saying I'd been upgraded to Nobu, which was awesome since I've never stayed here and always wanted to (leaving only Cromwell as a Caesars property where I haven't yet stayed).

Got a nice room (if small; shower-only, too), with a view of Flamingo. Enjoyed having the check-in directly at the base of the tower. I'd probably stay here again, although I slightly prefer the Laurel Collection Octavius/Augustus towers at Caesars. The Nobu location will be better once the valet area is back to direct connection to casino vs. the current "tunnel" during construction.

Bedding, toiletries, etc. were an upgrade, and the decor is nice. Certainly can't complain for $0 stay on a Saturday.

"One free night" seems like a very weird promotion to offer, though -- works for me because I already had a 2-night Cosmo reservation for Sunday-Tuesday, and used it for the expensive Saturday night, don't mind changing hotels, but for encouraging gaming activity on-property, 1 free night or 2-3 nights at a substantial discount would work better.