Answer
Look for lodgings that offer: - Community-based tourism initiatives - Locally sourced food and products - Employment opportunities for local residents - Cultural exchange programmes - Eco-tours that benefit local artisans Eco Lodges and Farm Stays can be approached by first deciding the location, time available, transport and level of activity that suits the trip. Use the options in the question as a starting point, then compare current provider information and recent local conditions before making a booking.
Practical Chiang Mai planning note: Compare the exact neighbourhood, transport options, cancellation terms, noise, accessibility, breakfast and pool or gym access before booking. A hotel described as "central" may still be inconvenient for your own itinerary.