It's a great idea for urban campers. Maybe they don't have the time to get away for a whole week or long weekend. Or perhaps they don't have the transportation to get out of the city to a campsite. A lot of urban dwellers also don't have space in small apartments to store bulky camping equipment that's only going to be used a few times a year.
Sure, it isn't going to be an authentic camping experience. No campfires for one thing. No smell of the great outdoors...no pine trees, mountain air, or ocean breezes. Then again no mosquitoes, woodticks, skunks, raccoons or bears. No getting rained out. No long drive back to the city. I think the pluses outweigh the minuses here. See more pictures at Apartment Therapy and Hutten Palast.