My road and mtn. bikes reside in the exercise room with the weights and lifting bench, cross and backcountry skis, camping gear, climbing gear, and library overflow bookcases. This is also where I move the stationary trainer for my indoor riding when my wife's bike is not parked on that apparatus in the house.

I like riding indoors in this room (which is one of two rooms in my detached workshop (20 x 24 feet)) because the temp in winter stays just above freezing. and I can get a serious workout without sweat dripping/flying all over the house. Also, there is a large south-facing window that looks out on the garden allowing me to revel in riding indoors at 34 degrees F. while the snow/rain/sleet is falling just outside the window. It is nothing fancy but it works and I enjoy riding there when the roads are a mess. It is also convenient to wheel a bike through the door into the workshop for maintenance.

During warmer seasons my wife's bike resides here too.