I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission not required.
The café is part of what was a gym on the shore near Hest Bank, the rest of the place is (was?) Hydropaws. There's a car park but that's only open when the café's open however there's plenty of parking on the promenade close by. I've already added a spot nearby but this is worthy of it's own spot because it's a damned good café and you can sit on the edge of the car park wall just in front of it, handy if you're with someone and they're of the what-am-i-going-to-do-while-you-fly attitude.
Entrance from the prom - https://w3w.co/fixture.protester.doing
Car Park - https://w3w.co/loudness.corporate.mimic
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 16/04/2021. It remains the responsibility of any pilot to check for any changes before flying at the same location.