So they left you with a French drain and you are not happy with how it flows??? Take out the small pebbles and rocks clean them and replace. It should be fine they didn’t have fabric 1000 years ago either.

I commend your girlfriends dream of being a pole dancer and wish her well. That said I think you will bring the ceiling down on your heads. Please do not try this in your rented apartment.

It is so when you have a nice expensive home you don’t have to see the washer dryer lol.