I like knowing as much as possible and seeing pictures of everything before booking a luxury hotel and when looking forward to a holiday.
I normally check here (of course!), TripAdvisor (reviews and pictures),
www.flickr.com (pictures), hotels own internet sites (pictures, floor plans, resort plans, activities, menues etc.), Gallivanter's guide (reviews) and look for videos at You Tube or the ones that Kuoni Travel have (
www.kuoni.co.uk).
What about you?