How could we get from the railway station in suzhou to the garden hotel (daichengqiao road)?

There is more than one railway station here. I wonder if you refer to the Main Rail Station. If so, you can take subway line 2 from the rail station to Sanxiang Square and transfer to bus no. 931. After being dropped off at Wangshiyuan, walk south for around 150yd to find the hotel. If you can find bus no. 202 near the rail station, it can also be your choice. Take it to Wangshiyuan directly.

Walk to your hotel for about 220yd to Nanlin Hotel bus stop and take bus Tourist Line 2 to Ren'an Street. Walk south along North Tongjing Road for 5-6min and turn east to Liyuan Road, where you can easily spot the Lingering Garden.

The One Day Pass for metro is available in the city and it can be bought in the Customer Service Center of the metro stations. It can only be used on metro. Both trips above are not a long journey, so you can take a taxi instead as well.