I stayed in the mid-range one, right by the lake.
Where to stay in Hangzhou
Stay by West Lake. The city is built around it, and you want to walk to the water in the morning before the crowds.
The hotels I'd pick
How long to stay
Two nights: one day for the lake and the tea fields, one for Qingshan Lake. Here is the plan.
Quick answers
Where should I stay in Hangzhou?
By West Lake, the city is built around it.
How many nights in Hangzhou?
Two nights is enough.