I have lived in a tiny house that just under 400 square feet for 6 months. So I can share my experience. Good things: easy to clean, decorating and revamping of the house is easier, maintenance cost is low, energy efficient, easy accessibility, low utility cost, it provides space for outdoor living. I think it is great! Also you can use such home for traveling. Do you want to build a tiny house for you? If yes, I recommend to look these models from Build Tiny House company. They are great and prices are not high.