Yes, Jeb was a very good governor. Very popular in FL. The State did very well during his time in office, including his spectacular leadership during several years of disastrous hurricanes. He is not perfect. No one is, especially politicians, but he did a good job. He also maintained strong popularity among GOP, independents and even some Dems.
Would I support him for President. Hell no. Two is enough, and neither previous Bush left the party in good condition. For Jeb, running against Nelson and taking that seat back would be a welcome decision.