this is the hotel address where i will stay, so please guide me from here how to take y-9 bus to visit west lake.

You can walk from your hotel to Xia Long Wei bus stop to take bus no. 900 to Yan'an New Village (Yan'an Xinxun) Station. There you can transfer to bus no. Y9 to the West Lake directly, from which you can walk to the Silk Museum for a visit.

To China Tea Museum, you can walk from your hotel to Xia Long Wei bus stop to take bus no. 33 or 307 to get off at Xueyuan Road, Tianmushan Road, where transfer to bus no. 197 to get off at Kongjun Liaoyangyuan Station. Then the museum is around 1,000m away.

To ride the water bus, you may have to go to Wulinmen Station.

thank you dear Linda for your detailed answer, i want to further clarify that
1- for silk museum, which stop i have to get off from y-9?
2- how can i get to wulinmen station from my hotel to take water bus. please write bus station in pinyin as well
3- please guide me the bus rout to go to "Qing He Fang" for shopping

1. By bus line Y9, you can get off at Jing Si bus stop and then walk to the Silk Museum.
2. From your hotel, you still need to walk to Xia Long Wei bus stop, where you can take bus no. 900, B2, or 10 to Wulinmen Station. Once boarding any of them three, tell the driver that you wanna go to Wu Lin Men( 武林门).
3. To Qing He Fang, you can also use bus no. 900. Just get off at Yaojang Guangsha Station.

Dear Linda,
Your reply is very precise and helpful for me. I am really thankful for your time and guidance.