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While I haven't been to the Dunes clubhouse in Michigan, my vote for the best low key clubhouse would have to be another Dunes - Machrihanish. As someone who is in the design-build business, I was impressed with the small scale functionality of the tiny space, probably no more than 900 sq,ft. in total. The pro shop component was no more than a small corner alongside four quaint tables. A one man operation, the gent who checked us in was there to greet us with hot soup and fresh sandwiches at the turn, no other menu choices. After the round the only thing warmer than the cozy wood burning fireplace was sipping the 12 year old Balvenie.