You may want to put a cheap volume control somewhere easy to reach, that way you can control its level without interupting the fun, Partsexpress has some budget models to consider. If you ever upgrade you can get many units with a Zone2 feature that will allow seperate signals and volumes in 2 rooms, some even come with the second remote and sensor to place in remote room.
Before I gave up on recievers I had a Onkyo TXNR900 unit with 7 channels so you could run 7.1 or 5.1 in living room and have stereo in seperate area of choice. You could do 7.1 plus zone 2 if you add a outboard amp, that Onkyo was $1600 in 2002 and now sells for as little as a few hundred bucks.