Blackfin Resort & Marina, Marathon, FL
On the trip back from Key West I was looking for a decent, but cheap place to stay. The Blackfin looked like a likely candidate, so I pulled in. It was very quiet. The desk clerk was very friendly and the room price was only $89. The Blackfin is on the bay side of the island. The room was clean but very dated. I could imagine myself being transported back to 1968. And that's not entirely a bad thing. There seemed to be only a couple of other guests (fishermen) and a few boaters in the marina, some of whom appeared to be live-aboards.
I stayed here on a Monday night and is was as quiet as a church. My guess is that they get booked up on weekends with fishermen. It was an OK place to stay for the night, but nothing to get excited about unless you are a fisherman and are looking for cheap but decent accommodations.
I ate dinner at a great waterfront restaurant just up the street called the Island Fish Company Tiki Bar & Restaurant. I ate right on the dock. Great food, great service. The thing about the Keys is that when a restaurant says "waterfront dining" they really mean it. I could have literally taken 3 steps and jumped in the water. I had a mahi sandwich and a virgin daiquiri and spent $21, not including the tip.
There is a restaurant / bar at the Blackfin, but it didn't appear that anyone else was eating there, so I opted for the Island Fish Co.