Space tourism may face some challenges with the uncertainty over the next-generation rides into space. But that hasn't stopped Earth designers from envisioning future space hotels for paying thrill seekers.

A robot concierge, a redesigned showerhead and a full-sensory exercise wall are just part of the Space Hotel Project created by master's degree students in a program hosted by Imperial College London and the Royal College of Art in the UK. The concept could theoretically attach to the International Space Station, so long as the growing space outpost remains in orbit.