Oh! Thank you @nomadsoul! For one day, I recommend you: have a great breakfast at Ombra Café. Don't forget to have a Thai tea there, is the best in the town. Take a red truck and go to Huay Kaew Waterfall... Climb it into the top and you'll find a natural pool only for you. From there you can go to Doi Suthep, the temple. Amazing view and a very peaceful place! I love going there. On the way back, you can have dinner or lunch at Nong Bee's Burmese restaurant. Don't forget to have a tea leaf salad. It's special! Yeap... for one day this is my recommendation! :)