What a pleasant surprise this place was. My wife, her sister and a cousin and I booked two rooms on the Mekong River side and found it was well worth it for the view alone. We also enjoyed a very nice al fresco dinner at the hotel's restaurant, seated next to the pool. Chiang Khong is a bit of a drive north of Chiang Rai in Chiang Rai Province, quite close to the Golden Triangle borders with Myanmar and Laos. We weren't there for the onsen, which was fortunate because some kind of renovations were going on and it wouldn't have been available. The Teak Garden had a very nice and helpful front desk staff, and the place has very interesting foliage (notably the teak trees after which it is named). They also provided packaged goods for visitors who wanted to greet the local monks in the morning and give them an offering of food and other items, which this "farang" thought was a nice touch.