The atrium is the focal point of the house which has no garden, due to the conditioning of the building space. In line with the entrance there is a small room instead of the usual tablinum, frescoed with a central painting depicting the myth of Narcissus. A niche opens on the same side, which forms the domestic lararium depicting the family Genius, whose intent was to sacrifice and two auspicious snakes on either side of the votive altar.

A rare table was found in the house, having a bronze Egyptian sphinx as a support, now exhibited at the National Archaeological Museum in Naples, together with a large number of bronze tools, including 120 fishing hooks. The name of the house derives from the frescoed painting of Hercules standing near an altar, the latter generally identified with the Ara Maxima founded by the hero in Rome, where perhaps Hercules and Admetus are to be noted in front of the tomb of Alcestis.

Date of excavation: 1903.