Delighted to hear the Adobe Motel in Yachats (still pronounced YA-hots, I'm sure) was still operating, at least a couple years ago. We patronized it from 1968 to 1971 or so, and loved every visit. It was a pretty drive down from Seattle, and the restaurant, as I've said, was outstanding.
The story of it was very interesting. It seems that an aerospace engineer from Southern California get fed up with the rat race in the early sixties, quit his job, and came up to the Oregon coast, bought some oceanfront property, and built the original motel himself, from adobe blocks he made on the site! Where he found the clay, let alone dried the bricks - it rains about 345 days per year on the Oregon coast - has always baffled me.
Anyway, according to local lore, he built the kitchen and lovely dining room as part of the operation, and took over as chef. He was written up in a long travel article in the Atlantic Monthly magazine in about 1968, which is where I remember the details above from. It was a very popular weekend destination to Seattle people. There wasn't really much to do on the Oregon coast, but it was already becoming a popular second-home destination. My consulting company did several development studies along that coast for various west coast developers, and we were always kind of at a loss as to why it was so popular. Though, granted, the scenery is spectacular.
The Pacific surf was too rough for there to be many small-boat harbors - the Columbia River bar at Astoria is a notorious ship's graveyard - but there were several golf course developments going in during that period. I have never seen the merit of playing golf in the rain, but Salishan, a posh resort a little to the north of Yachats, had two golf courses and an airstrip for its clientele. I assume it's still going strong.
At the Adobe, after eating, we would build a nice cedar fire in the fireplace in the room (every room had a fireplace and a copious supply of split cedar firewood) and curl up in bed with good books and watch the surf just beyond the window. Or sometimes just... curl up. What the he!l - we were forty years younger then. Other than these pastimes, the Oregon coast doesn't offer a whole lot to do.
Unless you like to play golf in the rain.