The World's first flying hotel - The Hotelicopter.

The double deck Airbus A380 has set new high standards for luxury accommodation in the air but, unless you can afford to deck out your own A380 as a private jet, the Hotelicopter concept aims to top this airborne opulence by equipping a four story converted heavy lift aircraft with 18 luxuriouslyappointed room hotels.
While the computer generated images of the Hotelicopter show a lot of imagination, the specified Maximum Takeoff Weight of 105850 kg (232,870 lb) is actually exactly same as that of the original Mil V-12 which is highly unlikely given the Hotelicopter has at entire 3 story luxury hotel added onto it. No need to remind readers that it is April 1st this week.
The design outlined at the Hotelicopter site includes soundproofed rooms, each boasting a queen-sized bed, fine linens, a mini-bar, coffee machine, wireless internet access, and all the luxurious appointments you’d expect from a flying five star hotel - there's even the promise of room service.
The original Mil V-12 was an amazingly large helicopter which absolutely dwarfs any heavy lift Helicopter in use today. Each rotor had a diameter of nearly 115 ft (35m), mounted at the end of a large wing, making the distance from the tips of each rotor blade wider than the wingspan of a Boeing 747. The two Soviet built V-12s did fly and still hold the helicopter heavy lift world record of 44,205 kg (88,636 lb) at a height of 2,255m (7,398 feet) set on August 6th 1969 but were simply too big and difficult to maneuver to be practical so never reached production.