Luxury is mostly about service for me, as well as style. Style includes everything from excellent food and wine, comfortable and well appointed rooms and suites, which as a prerequisite must be adequately spacious. I have preferences when it comes to décor, but that is not my first consideration when choosing an hotel. I choose hotels and resorts based on location, service, and the overall quality of experience I expect to have. Décor often comes into play when I am choosing a specific room or suite within an hotel.
Service, F&B, and comfort are what I care about most. Excellent service and F&B can easily outweigh slightly dated rooms and suites, or other shortcomings. But the reverse is not true for me. A stylish, beautiful hard product and vast amounts of space still do not add up to luxury if the service and food are crap.