@Irris, the roof is flat and on a hill there is a clear line of sight to the farm but the distance is 1,300 -1400 meters. It takes skill and/or image magnification to shot well from such distance. If you do, there is little that non snipers can do to retaliate.
@Simone Devon texts you the location it is a small restaurant by the Aquarium. The location seems nice and the restoraunt a bit pricy, though there is a waiting list, he was lucky to get you a table.