Seat that is retractable into the floor

The invention relates to a vehicle seat comprising a seat back, a seat proper connected to the seat back, a link mechanism for fastening the seat to the floor, and enabling the seat to move between a retracted position and a deployed position, the mechanism comprising at least a first connecting rod hinged to the floor and to the seat back, and the seat further comprising a guide mechanism comprising a guide fastened to the floor with the bottom portion of the seat back being guided therealong between the retracted position and the deployed position. In the seat, the rear portion of the seat proper is mounted to pivot relative to the bottom portion of the seat back, and the link mechanism further comprises a connection piece mounted to move relative to the floor and hinged to the front portion of the seat proper.