we are a family of 5 -couple with 3 daughters, ages 12, 17 & 24. we are arriving florence by train from venice at about 5pm in early april. we will only be staying in venice for 2 days. first day (next day after we arrive), we plan to get the hop on hop off bus tour around the city. 2nd day will be a road trip to pisa and sienna. just wondering what we can do in the late afternoon-early evening after we have checked in at First of Florence. any suggestions?