If you're eager to add some extra culture to your getaway, put Baan Jang Nak Musuem on your itinerary. See if there are any guided tours or simply roam around at your own pace.
You'll have sightseeing choices galore in Siwalee. Baan Jang Nak Musuem is a good place to start here, but there are loads of other interesting places to appreciate. Chiang Mai City Arts & Cultural Center, Chiang Mai National Museum, and Wat Chiang Man are not far from the museum and will fill in your day nicely.