re: Seven days in Scotland...

3 villages that the wife and I found very enjoyable were Luss, Inverary and Wigtown. I'm not sure about accommodations--we stayed in Glasgow each night and drove around during the day without much of an itinerary. On or off the beaten path will be entertaining.
Edinburgh was, as expected, a lot of fun. Wife also found shopping in Glasgow that she enjoyed.
We're in the same age bracket and hoping to go again before too long.