Titusville (Space Coast Regional) - KTIX. You can see the NASA facility (shuttle assembly building and launch pads) very clearly (they are only about 10 miles east of the airport). They have an ILS and NDB approach ... don't remember if they had a VOR. Also a pretty decent "diner-style" restaurant on the field that isn't overpriced at all.
No instrument approach at all but of the 76 Florida airports I've landed at, Cedar Key (KCDK) is my favorite. It's on the west coast, west of Cross City ... tiny island, even smaller airport, 100% unattended. The island has a few restaurants, couple of beach resorts, and some shopping and is surrounded by even smaller islands that are now national park. It's a real treat and if you ever get a chance to go in there for a day, you won't be disappointed.