I visited Siena at the end of March when the sun was shining high, which was great because there are plenty of gelaterias to choose from before deciding to go and sit in the huge piazza that faces the tower (costs 7€ to walk up). Italian’s were sat all around basking in the sun and the atmosphere in Siena seemed really relaxed and friendly. There are some cute little pottery shops with hundreds of beautifully hand painted goods, just around the corner from the stunningly built Duomo.
The streets of Siena felt full of life and the architecture felt quite medieval. Every street you walk down leads you to another surprise and an amazing view of the rolling hills surrounding the city. It’s definitely a great little city to visit if you’re staying in Tuscany, as it’s not too big and it’s not too small.