Maybe you could try to put the back of a house there? I often run into the same problem and it normally does the trick. Sometimes, other things can fit there depending on the setting, like a garden with benches, but in this case I think that a house would work. I reckon you could get one to fit there nicely, and it wouldn’t be extra work since the player won’t be entering it.

This is essentially what I mean, but this one is sticking out more than you will probably want: