Just makes me wonder where the TownePlace Suites was. ;-)

I've regularly seen two or three Marriotts together (Fairfield Inn and Courtyard; Residence Inn and Fairfield; Marriott, Courtyard, and Springhill Suites are a few of the common combinations)
But, I've never seen five.

I'm sure it gets some benefit. I once went to a wedding at a Marriott resort, but stayed at the neighboring Courtyard. (whereas I would probably have ended up at another brand otherwise.)