Tana Toraja is in the middle of Sulawesi. High in the mountains, the only way to see the place is by foot (or perhaps bicycle). Apparently the best time to go is August, for all the funeral ceremonies they have then, but I found last week during rainy season to be great. It rained every afternoon, for one or two hours, and that was it, the rest was all blue skies.
Few tourists around, it was great.
Firstly, location.