Since bulldogs are on the larger side of the "small breeds", I wouldn't suggest a potty pad for long term solutions... as a puppy sure. I'd suggest something like this - Real Grass Dog Potty | Puppy Pee Pads | Fresh Patch even in to adulthood, because, especially in the morning where they've really gotta go, a several min. walk downstairs can be too long. I'd put the grass pad out on your balcony, and just use outside for walks, not necessarily a potty place.