According to a survey conducted by USA Today and Compuware, the American hotel group Marriott is leading the industry when it comes to provides a fast experience on their consumer website marriott.com. The study was measuring the speed, navigation and rooms details of different hotel brand websites.
Marriott website drive about 12M unique visits a month with about 3,600 hotels to offer.
Now if you investigate further on the Gomez website (US chains only) you will see that other hotel brands are leading in their own category where the latest benchmarch study was made between July and August 2011.
For instance Best Western wins the best response time with 0.354s. The European hotel group Accor wins the category for website availability at 99.99% and Hyatt is the leading brand when it comes to consistency. More information of the different tests are available here.
It's interesting to note that Starwood is at the bottom of the 25 hotel groups studies with a response time of over 3s.