This is really one of the best temple complexes in the Chiang Mai area. It's a bit further out than most of the other temples, but that means fewer tourists, which is a good thing.
This isn't a single temple, but rather, a complex and will offer you both older sites and more modern temple buildings. The older sites are particularly fascinating and although they're billed as in the Indian style, the Khmer influence is obvious. The entire grounds are peaceful, much of it shaded (REALLY nice) on a hot, sunny day and a place where you can just casually walk, sit and enjoy yourself.
The one caution that I'd offer is to make sure that you arrange round trip transportation, because it is a bit out beyond the city center. We took a taxi out and our hotel assured us that getting transportation back would be no problem. That wasn't exactly the case. We couldn't find any transportation at the sire and since it's located next to the super highway, the local options just weren't there. They do have a tourist information office, but no one there spoke any English, so they weren't able to offer any help in that regard. We finally left the grounds and headed for the Maya Center up the road. We were finally able to snag a tuk tuk and get back to the old city, but I wouldn't want to chance it if you can help it. Do yourself a favor and hire round trip transportation, then enjoy a really fine experience at the complex.