The Manned Cloud is a hotel that will float above Paris, France:

Living in the sky, watching the Earth from above. Rediscovering the marvel of traveling, experiencing contemplation. Exploring the world without trace

Manned Cloud is an alternative project around leisure and travelling in all its form, economic and experimental, still with the idea of lightness, human experience and life scenarios as the guiding principles. The spiral of Archimedes is the driving force of this airship in the form of a whale that glides through the air.

Image and info taken from DeZeen.com.