According to the evidence of recent excavations it would appear that the site of Hellenistic Sitia is situated at Tripitos, a small headland 3 kms east of Sitia.

On the side of a hill tilted towards the sea, an oblong hole or pit with a floor was discovered measuring 30m x 5.50 x 5. Archaeologists believe that it was used to hoist, protect and repair ships (like a present day ship-builders yard). It is the only confirmed such find in Crete and dates from the Hellenistic period.

A small Hellenistic town with the remains of some dwellings was also recently unearthed at the same site. Archaeologists also found a large fortified wall to the South and many vases, coins, pieces of jewellery and lead weights.
 

Source: Sitia.gr