Business for the legal prostitutes is booming One escort said that girls were mainly students in their 20s paying for university Escorts can charge as much as £3,000 for a six-hour booking at a client's hotel Nearly 3,000 conference delegates have attended for the five-day jamboree Prostitution is legal in Switzerland, with sex workers expected to pay taxes The Grandhotel Belvedere sits majestically on a hill overlooking Davos. It's aptly named. The Belvedere resembles a magnificent Alpine stately home. 'Five-star plus with old-school charm' is how one recent guest described their stay here. How much does a room cost? It's...