I think street view is accurate, but it may be that the pictures do not fit your image of a French village. It is fairly typical of a medieval village of this size in this region. They did not allow for greeney in those days, but you will see many window boxes. Some properties will also have inner courtyards with lots plants in pots, but those will not be visible to passers by. The historical center is old, but not impoverished. I am not sure they did kerb and channelling in the middle ages. If you take a "walk" along the lagoon, there is kerb and channelling galore.
Gruissan is also a "ville fleuri"
There used to be oleanders along the lagoon, but they did not do very well so they were replaced some years ago with plants adapted to wind, salt and draught. Those plants have grown since the street view car made a visit. It is a dry area, water is expensive and not wasted on lawns, not even in a rich commune like Gruissan. Right now the mimosas, almonds and apricots are in bloom. In the wild the rosemary is in full bloom. March is the time for wild asparagus, and for the wild narcissi and irises to bloom on the garrigue. Most of the greenery around consists of pinewoods. There are also an awful lot of vinyards, but they are not green in winter. You will also see olive groves.
It is possible to receive the freeview channels from British TV via disc.