I just came across the Five Star Alliance web site, and for me this is better than Leading Hotels of the World, Relais & Chateau, and Small Luxury Hotels all rolled into one! This is a great resource for luxury travel--all the hotels are individually selected and you can book directly through them! The site is very well designed, and each hotel entry has lots of information and photos. there are also reviews from people who have booked through the Alliance and then stayed at various properties.
It is not limited to small hotels--it features all sizes.
The only question: are they reliable? Does anyone have any experience with Five Star Alliance?