I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission not required.
You can drive direct to the location I've marked or you can park at Lough Cowey and walk there (along very quiet country roads). Lough Cowey is also a suitable location for flying, though there are often fishermen, and the local model aircraft club sometimes use it for their seaplanes.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 01/10/2020. It remains the responsibility of any pilot to check for any changes before flying at the same location.