When traveling, you will be expected to use the woods for rest stops. Everyone does it this way, so please don't make a big deal about it. Take small packages of Kleenex with you wherever you go and carry small packages of Handi-Wipes so you can wash your hands afterwards. Most homes do not have this capability. Some homes do have portable sinks and can furnish you with warm water to wash with each day.
Saunas are sometimes available and they are wonderfully refreshing.
This is how some of them bathe, but because these take much work to prepare, please use them sparingly. Saunas are done as a group of the same sex. Bring a bathing suit. In India, we have a latrine at our base home. It is a combination bathing area and Indian-style toilet.