I really enjoyed my afternoon at Amrita Garden as it is a truly peaceful and quiet place with a relaxed atmosphere. The service was friendly and helpful, the food was alright. I had the daily lunch set and it felt like the veggies had been sitting on the plate for quiet a while, the soup was reheated and a little tasteless. But maybe my expectations were a little too high considering the price, which was a bit above average. They also offer some take-away desserts (some of which are declared as vegan) like different sorts of brownies, which are superb and absolutely made up for the disappointment!
Overall it's probably the healthiest food in the most beautiful place you'll find in Chiang Mai.