Early design concepts called for a central hub with a dozen modules radiating outwards, providing an indefinite number of bedrooms for several customers at a time. Claramunt said that while it would be a challenge to design a bathroom that works in microgravity, showers might be taken in a spa room with bubbles of floating water. The issue of moving around in space would be solved by having guests wear suits of Velcro for sticking to the module walls, similar to its use in the film "". The station was to conceivably orbit the Earth once every 90 minutes, providing 16 day-and-night cycles every 24 hours.