A laid-back bookshop-bar right on Piazza Santo Spirito, recommended for ending the evening with a classic Negroni at a piazza-side table. One of the best aperitivo spots in the Oltrarno — unpretentious, full of locals, and open late. The book collection (mostly Italian, some English) lines the walls and is browsable if you arrive early.
Go at 18:00–19:00 for the aperitivo hour when the piazza fills with students and residents from the neighbourhood.