Pros
Hilton has a team member travel program that allows employees to stay at Hilton properties at discounted rates. Although I have never once been able to get an "Employee" room at any hotel without personally calling the hotels general manager, it is possible to get "Family" rates which, although they are not free, are discounted from the properties normal nightly rate. Depending on what projects in IT you work in, there is some opportunity to work with some of the latest Microsoft technology. If you happen to work of one of these groups there are some really great toys to play with.
Cons
Hilton's corporate offices are very bloated with middle management. Layer after layer of bureaucracy that impedes the company from making any real progress. The Blackstone Group, who now owns Hilton is about to make a massive round of cuts and in the near future this may no longer be the case. Only time will tell. Corporate as a whole, has little or no project management processes in place to allow projects to be managed effectively. In most instances projects are successful in spite of themselves. If you can stand the utter lack of organization and the mind numbing bureaucracy, Hilton will be a fine place for you to work.