Ah, it always gets down to sex, doesn't it?
According to people with knowledge of the investigation, Mr. Wade told investigators that Mr. Cunningham periodically phoned him to request a prostitute, and that Mr. Wade then helped to arrange for one. A limousine driver then picked up the prostitute as well as Mr. Cunningham, and drove them to one of [two] hotel suites, originally at the Watergate Hotel, and subsequently at the Westin Grand.
[I]nvestigators are focusing on whether any other members of Congress, or their staffs, may also have used the same free services, though it isn't clear whether investigators have turned up anything to implicate others.
Naturally the Watergate hotel is going to be involved. It's a karmic magnate for scandal.