The guppy zone defines where I can find and leave a guppy. In other words, these are the areas where I can start and end the rental of a vehicle. In addition, within the guppy zone there is no blue zone parking fee.
On our map, it is the area delimited with a light blue color. This covers most of the urban area of Torrelavega, to move freely not only in Cantabria but also inside the city.