Yeah I don't know if blowing it out the window is the best idea... especially for a long term solution. I smoked in a hotel a couple times a long time ago and and we were blowing it out the window and the housekeeping woman knocked on my door, so I opened it and she whispered to me "Hey we can smell the weed down the hall so put some towels down or something". At least she was cool about it!
I'm telling you, use a blowie, sploof, spoof, doob tube, whatever you wanna call it... it really works and is the best way to mask the odor of the smoke. Just make sure to cover your bowl each time you take a hit so the excess smoke doesn't keep streaming off the bowl.