which hotel is e best location to stay in suzhou and hangzhou?

It depends. Whether the location is good or not is decided by your specific demand, near the city center or near the famous attraction?

Anyway, Grand Metropark Hotel is located in the junction of Suzhou Industry District and downtown. And Suzhou Overseas Chinese Hotel is located at Sanxiang Road of Suzhou. It is 2 kilometers away from the city centre and 4 kilometers from Suzhou Railway Station.
As for the hotels of Hangzhou, Shangri-La Hotel lies on the north bank of the famous Hangzhou West Lake and it shows you the splendid overall view of Gushan & Xiling Bridge.