A few days' trip in Suzhou can be arranged like this.
Guanqian Street → Humble Administrator's Garden → Suzhou Museum → Pingjiang Road
Tiger Hill → Qiao Feng → Hanshan Temple → Pingjiang Road
Suzhou Museum → Pingjiang Road → Shantang Street → Shiquan Street (free tour)
Lingering Garden → Hanshan Temple → Tielingguan → Qiao Feng → Huqiu → Shantang Street.
For more specific information about Suzhou tourism, you can look at Tongcheng.com's Suzhou Raiders.