Street name: Οδος Στυλιανού & Λαμπρινής ΠΡΟΚΟΥ
It is actually a stair

stair down (nane plate on a colored building)

Here the path is made of stairs. Also other section are occasionally made of stairs.
Additionally the section on the beach is not really exhisting

Stop

Stop

In front of power station, road becames 1 lane, with priority for vehicles going from West to East

This should not be tagged as roundbout, since priority to right applies

Here there are stairs

Street name: Οδος Πελοπιδυ ΠΑΦΕΛΕΤΟΥ ΑΝΟ/ΓΟΥ
Surface: paving stone

Stop