There are some hotels, for sure, where the suites sell for many times the price of the regular rooms - in Shanghai, for instance, the Park Hyatt's Park Suite often goes for around three times the price of the regular rooms, and is over twice the size. Good use. In London, a single room at the Andaz can often be had for around $150 at weekends - and the certificate will upgrade that four categories to a suite that goes for $400 or so.