To the south of Andron B is a building with similar plan, which therefore was called Andron C by the excavators. It appears to date to Roman times, possibly the 1st century AD, and its plan differs in one important respect from Andron A and B, viz. that there is no niche at the back of the main room. Its gneiss columns may have had Ionic marble capitals, however, and the architrave, which has not been found, possibly carried a Doric triglyph frieze. A suitable block with two triglyphs and three metopes is lying in front of the north anta of Andron B, where it was found. The architectural marble blocks to the east of the building and inside all belong to Andron B. The function of this building is not known, but it cannot be excluded that this was also a building for ritual banquets.

Andron C from the north-east.