Just bought a new powerful pump as I'm exclusively expressing. We live in a flat that's split over 2 levels so our bedroom is on 1st floor, our lounge upstairs on 2nd floor. Our neighbour (on ground floor) caught me in hall to ask what the 'mechanical noise' is that wakes her up 
I explained its my breastpump and that I need to express at 11pm, 3am and 7am to maintain supply. She said it makes ceiling vibrate and is very loud (even though it's not on the floor it's on a cushion on my bedside table!) She asked me to do it upstairs. I explained this isn't practical as my DH wears earplugs so I need to be able to hear baby if he wakes. She suggested I take baby upstairs with me!! Why should I have to move my sleeping baby upstairs (and risk waking him) every time I express milk? He's just started sleeping through and got used to his cot. And there's no way I'm going to move cot upstairs and sleep on sofa for the next 8months 
AIBU to think it's rude to tell someone not to express milk in their own bedroom? It's not like I'm playing loud music! I don't see why neighbour can't just get some earplugs!