The guppy zone defines where I can find and drop a guppy. That is, they are the areas where I can start and end the rental of a vehicle. In addition, within the guppy zone you do not have to pay to park in the blue zone.
In our map, it is the area delimited with a light blue colour. This covers most of the urban space of Santander and other areas of interest such as El Sardinero, the Palacio de la Magdalena, Playa del Camello or the surroundings of the Hotel Santemar