It is situated in the north-western part of the village of Grgurići. The layout is in the form of an elongated rectangle with a narrower rectangular shrine, with the sacristy to the south side. On the western side of the nave, there is a wooden choir-stall with an inscription referring to the donor as Tonko, the son of Marko Gradić, who consecrated the church to St. Rocco and the Saint Magicians Cosmas and Damian, as a prayer against the plague, which ravaged Slano around 1527. There is an altar painting by the Dutch painter Marten de Vos from the end of the 16th century, with an iconographic depiction of the votive saints.