Agree with the others. It's hard when you have a boy and they decide to pick a spot other than their designated potty area. I had the same problem years ago with Dude. He was lifting his leg in my laundry room on a spot other than the pee pad. It was because he is as leg lifter and decided that peeing on the corner of my freezer would be the perfect spot to potty. But I've never thought it was a marking issue as much as an "I'm all boy and don't squat like Bogey and Pebbles " problem. Grrrrr.....
I wanted him to potty on the pad but he wanted to use the chest freeze because he's a leg lifter.
So I did a couple of things to adapt my freezer corner. First I lefts the freezer up off the floor about 4" with 2 wire shelves and attached the pee pad directly to the freezer with clip magnets. I use washable pee pads from 107Barnery and because they are the largest size she makes all three now use them because they are large enough to cover the floor. This idea though wouldn't work with disposable pads because they are not large enough. But I wasn't having an issue with a piece of furniture like you which is not good at all.