The most despicable in human behavior is what happens to North Americans when they die here. People in the surrounding communities sweep down like vultures and steal all of the belongings. Operating between the laws of the 2 countries you can even have a former attorney, pretending to be a friend, will have the family in the US send a "power of attorney". Instead of sending the bank accounts and possessions, the scoundrels in Cuenca will keep everything for themselves. The fake charity Ecuador Cares is also a scam.
To window shadow: Just call an attorney to ask their prices for what you want in the way of a will. Many locations will accept a self made will if you follow the guidelines for what has to be established for executing the will. I would not pre pay for after death plans in Ecuador. It's predictably lost money. Even sending money to have the body returned to the US is doubtful that the body would be returned to you. They will just keep the money, which is their standard practice.