I sure hope the hotels are selling these only to groups and not to random strangers. I also hope/assume that each room has its own private "en suite" bathroom, meaning at least toilet, shower, and sink.

For certain groups, I can see the potential attraction of such accommodations, whether it's a group of friends who can't (or don't want to) fit into a single room or suite or a business group, perhaps even those traveling together for a team building exercise rather than a standard project or training assignment. OTOH, for business colleagues, the lack of privacy could be an issue with rooms in different locations in the same property where the group can meet easily for breakfast, transportation, drinks together, or evening plans.