All my tanks are in one room. Just two nano tanks on my kitchen counter. I do spend most of my time in my fish area when I'm not sleeping or working. Though I have been known to fall asleep in my fish area
have most our tanks in the basement atm.. and to be honest i hate it... hard to just sit down and watch them or enjoy them.. that being said.. the plan is to house the monsters in the basement and set-up a few nice planted/grow-outs upstairs in the main living area when we move at the end of the month. I've had a tank in my bedroom most my life except the past year and change now... that will also change.. i'll probablly end up setting up either a nice lil' reef or grow-out for the more delicate stuff we keep. Nothing as soothing at night then the trickle of filters.
Living room, I take pride in my tank and want to show it off to everyone who comes over. Plus I can watch it constantly while I'm doing other things, like right now when I'm on MFK.
I have 3 tanks, two in the living room and 1 in my bedroom. I like my room to be extremely quiet so I am moving the one in my bedroom to the living room.