Just booked a three night stay in early August via Chase LH&RC. It seems they give you the following bennies:
Cardmember Benefits**
- Full Breakfast for each guest daily in Les Fenetres
- 85 Euros or $USD100 Hotel Credit – Not valid for Alcyone Michelin Star Restaurant, Spa by Clarins and Conciergerie
- VIP Welcome Amenity
- One way airport transfer from the Junior Suite Harbor View category and up
- Bottle of Champagne with 3 night minimum stay
- Free access to Spa by Clarins (Sauna, hammam, sensorial showers, solarium, indoor swimming pool, fitness center)
The following amenities are guaranteed, if available, at the time of booking:- Guaranteed Upgrade to Seaview room
Will report back what I experience there. Booked this based on your posts here, lets hope I won't be disappointed

The family was wowed by the pictures on google reviews and the IHG website.