I lived there for two years, rode my bike, rode my scoot, drank espresso.
It’s proper shite 😆
Go to the Boboli Gardens, you’ll see a helluva lot from there with spectacular views of the city. It’s quiet too, then walk towards town before the Pont turn left down Borgo S Jacopo, then before the Trinita Bridge on the left look for a small cafe on the edge of a very small triangle building. Go there, sit, eat, drink Italian… It’s Ace. Once fed take a left towards the Bassilica Santo Spirito. Very quiet square, unaaposing, yet the wonders within are quite spectacular.. Don’t forget to look up, walk backwards towards the Font 😉
Your day, right there.