If the inside toilet is inconvenient then of course the garden is the place to go.
Many times I’ve made a long walk home on a cold night with a belly full of beer and thought there’s no way I’ll make three flights of stairs and a locked door and still hold it in. The most hidden spot in the garden gets it.
There’s been odd shameful incident when it was quieter, quicker and easier to open the French window and let it flow freely to the pavement three floors below.
Not proud of that, but you’ve no pictures and you can’t prove a thing!