This Songkran long holiday I want to go somewhere near Bangkok. Budget under 3000 baht per person with overnight stay. Already been to Khao Yai so I want somewhere new. Dont want beach because too hot. I like nature waterfalls mountains and cool weather. Going with 3 people and we can drive ourselves. Any recommendations? A friend went to Nakhon Nayok and said it was beautiful but not sure if Songkran would be too crowded.