The Mac Travis series by Steven Becker is pretty good. It is set in the Marathon-Key West area and has lots of funky characters and the watering holes they hang out in.
Also look at the Jesse McDermitt series by Wayne Stinnett. It is about a retired Marine? who buys an island in the lower keys, builds a paramilitary camp on it and goes off to right wrongs in the Caribbean.
In another area of Florida, Pine Island on the SW coast, the Ellie O'Conner series by Jack Hardin is good. I particularly like his writing style- easy to read and not too over the top.
Neither are as, well breezy as the Ed Robinson books and the McDermitt series in particular gets pretty violent without really advancing the storyline.
And if you want violent, take a look at the Logan Dodge series by Mathew Rief. Dodge and his partner Ange get into a half dozen firefights in each book, with machine gun bullets flying around them while Dodge and Ange kill off a couple of dozen bad guys while getting hardly a scratch. I ended up reading all three in the series, but had to ignore reality to continue through them.
And for mostly just fun, the Mango Bob series by Bill Myers is great. Just replace the trawler and babe with an RV and a short tailed cat and enjoy.
All are Kindle Unlimited eligible.
David