Few day ago I traced the route from Patra to Igoumenitsa and the first three seamarks buoys seems to be approx 150mt out.
Before editing, I'd like somebody else check.

via toraldo

footway start uphill

qui ci sono delle nuove lottizzazioni senza civico (sarà probabilmente 119)... in via pasch 119 c'è una fermata ATAP qualcuno sa dov'è?

In context of overlay "Street lighting" – Track / Land-Access Road – osm.org/way/138917571 via StreetComplete_ee 58.1:

No highway, farmland

prot civile

nome fermata:
via gemona 88 (piazzale osoppo)

via StreetComplete 29.1

Attached photo(s):
https://westnordost.de/p/29115.jpg

In context of overlay "Surfaces" – Unmarked Crossing – osm.org/way/1313994336 via StreetComplete_ee 58.1:

Non esiste più l'attraversamento

Unable to answer "Is this still here?" for osm.org/node/1134553808 via StreetComplete 55.1:

Dismessa

Comune di Matera riporta l'hotel circa 100 a sud est.