It may come as a surprise that to learn that in Bolivia there is no hot water in homes or hotels - at least not as we know it. Most buildings do not have a hot water system, not in the kitchen or bathroom. Not anywhere.
Typically there will be a shower head as pictured below (which is a tidy example of its type). This magically turns raw electricity and cold water into hot (Or warm) water. Without electrocuting the shower occupant. So far, at least.