They sound like an entitled jerk. Unlike some countries most of us don’t have live in “servants” from poor countries to keep the house clean and the yard immaculate. I discourage people from using my backyard because that is where the ducks and chickens are and it gets pretty muddy in winter which washes down to the back patio and I can’t keep it clean. It’s in the rules and one of the few notices I put up on the door. I leave a chair outside the door so if they do open it to look see they won’t got outside and tread in duck shit and then come back inside. Having said that no one in 200 guests has complained. I did get someone suggest I put some nice resort style outdoor furniture for the front deck but they wouldn’t say that if they were here when a 50km/hr storm came in and blew it all onto the grass. The one bench out there is attached to a very thick chain which is not for security purposes but to stop it blowing away.
And it should have been obvious you were landscaping. I have nice picture windows out the from overlooking the sea but after a storm they get crusted with salt. I can go and wash them down but if there is another storm on the way what is the point?