I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission obtained.
Mar Hall Hotel is an Edwardian Mansion in a 240 acre estate at Bishopton by the banks of the River Clyde. It now features a luxury spa and an 18 hole championship golf course. There is plenty of parking places and permission for flights can be sought from the duty manager. There is plenty of space for toal away from the hotel, some ideal spots around the edge of the golf course.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 03/08/2022. It remains the responsibility of any pilot to check for any changes before flying at the same location.