It's a bit like camping. In space. In a cold pressurized bubble.
OK, so it's not really like camping, but the International Space Station does now have a very different module unlike astronauts have ever seen before.
NEWS: Space Station Now Has Inflatable Digs
The Bigelow Expandable Activity Module, or "BEAM", was successfully inflated last week and today the space station crew opened the hatch and stepped inside to check out their new digs. However, this module, designed and built by Nevada-based company Bigelow Aerospace, isn't designed as an orbital den or (sadly) microgravity games room, it's a prototype intended to test the long-term feasibility of inflatable space habitats.
And so far, so good. NASA astronaut Jeff Williams entered BEAM to install air ducts and check sensors, reporting that it was "in pristine condition." When his checks were done, the hatch was closed and sealed.