Be aware that someone with a limp or someone overweight may still creak floors and stairs or seem to stomp with every step even if they're barefoot or wearing soft house slippers and moving as quietly as possible. If you complain about repeated stomping, talk about it. Once they've done everything they can, just accept it - disabled people can't always comply with this. Anyone using a cane indoors is going to make that noise whether they want to or not. You can't expect them not to leave early for work, use the bathroom at night, fix a snack or not come in late from long working hours. Some noise complaints are negotiable, others aren't. If you see a cane, it may not ever be negotiable.