Good-humoured staff, friendly service, a convivial atmosphere, modern cuisine with a touch of inventiveness (eg fish sausage or a seaweed/mustard sorbet as part of the mackerel starter; a lime/pea sorbet alongside a chocolate dessert), quality local produce and a few ingredients gathered wild (mustard seeds): this is the winning formula behind this small restaurant a stone's throw from Le Remblai promenade. In case you were wondering, the name Lacertus means "mackerel" in Latin.