I’m sure most readers will find the title-phrase curious. Although you may guess what this is, per my (current definition), there may not be any currently, or there may be as many as three of these. If there are three of these, you probably don’t want to go there. First of all, none of these are as accommodating as the most austere hotel on Terra Ferma. They are all more like prisons. Better in some ways (like if you want to do scientific research) and much worse in others (like if you want to eat real food, sleep in a normal bed or use a normal toilet). However, a number of firms and other organizations are developing commercial space, so if you are really, really wealthy, this may be an option for you.
