You can stay one night for two nights, or split four nights between two cities. The goal is to see the lake, gardens, canals, and neighborhoods at different times.
Don't stack classic attractions together
West Lake and the classical gardens can get crowded during peak hours. After a major attraction, a quiet street, teahouse, or waterside walk is added.
Stay closer to the night
After tourists leave during the day, the city's atmosphere changes. Staying in a walkable central area is usually more valuable than a larger hotel far away.