The town has no airport - the nearest is in Bastia, about 45 minutes' drive. There is no train station. You can arrive by boat as the town has a marina. There is a large free car park on the road towards the cathedral. There's paid parking for 1.20 euro per hour next to the marina.
It's a small place, so everywhere is accessible by foot.
The pretty harbour and harbourside restaurants. There's a citadel just behind the port.
Fish from the poissonerie.
There are many restaurants in St Florent, many specialising in seafood. Most of them offer a dish of the day for a reduced price (13-19 euros) at lunch or dinner.
Note that the supermarkets close just after noon and reopen in the late afternoon until 7 in the evening.
There are plenty of cafe-bars too.
The nearby village of Oletta has a wondeful 'auberge' which serves superb food with an even more amazing view.