Pisa sort of gets a bad rap. Yes it is a bit rough a round the edges compared to some cities but it certainly has its moments, it isn't a city I'd choose to stay in (if you are looking for an alternative to Florence to visit choose Lucca) but it is well worth exploring. You can easily walk from the rail station to the Leaning Tower. I didn't have as much time as I'd wish (someone was too lazy to jump out of bed on the last day) so I didn't explore as much as I'd like
Whatever your thoughts on Pisa you can't deny that the Field of Miracles with it's tower, baptistery and Duomo is singularly beautiful.
Cafe culture....something I love about Italy
The river.... you may notice a religious building on the right
This is the Chiesa di Santa Maria della Spina. And annoyingly it was open and closed about 15 minutes before I got there....
Oh well an excuse to go back.... something I'm not likely to need :)