Prince Bay Park, Hangzhou

You may walk north along Guangfu Road for about 300 yards, and cross the road. Take bus line Y2 from Chaiduo Bridge (Chai Duo Qiao) Station, and get off at Su Causeway (Su Di) Station. Then, walk east for about Nanshan Road for about 250 yards to the park. :)

Where can i get Bus no K4, 504, tourist bus line 1, 2, 3 and 5 near to Motel 268?

As I know, the bus line 504 is closed.
To take bus line K4, take a taxi to No. 1 Park (Yi Gong Yuan) Station for about CNY10.
To take tourist bus line 1/ Y1, take a taxi to Yuhuwan Station for about CNY 15.
To take tourist bus line 2/ Y2, walk north for about 100 yards, and turn right. Walk east for about 50 yards, and cross the road. Go to the Chaiduo Bridge (Chai Duo Qiao) Station.
To take tourist bus line 3/ Y3, take a taxi to Yan'an Road Station for about CNY 10.
To take tourist bus line 5/ Y5, take a taxi to Wulin Square for about CNY 15.