No, it's nothing like that. This was a private arrangement between two people and a hotel. They'd clearly contacted the hotels they were staying at, and paid something for luggage to be moved. Of course, on the Loire they are used to this, so maybe it's easier, but my underlying suggestion of contacting the hotels and seeing if they could help is still worthwhile I think.
A hotelier probably knows someone who travels to your next destination a couple of times a week. For 10 or 20 euros, it's not much effort to pick up and drop off a couple of bags on the way.