The cache is not hidden at the posted coordinates and it is not necessary to visit the place to get the final coordinates. However, there is an entrance to the Physics Department, University of Crete.
R= 165 Ω, C= 3311 pF
How to find the final coordinates
The resulting resistance and capacitance of the above circuits are useful for calculating the coordinates for the Certitude checker. The checker then reveals the final coordinates and a hint for your next steps.
Just in case, a local cacher will provide maintenance assistance.