We keep four bikes in the living room. It would be five, but the garage sale special is spending its nights and weekends locked up outside a train station in a remote Chicago suburb, so as to facilitate my husband's 2 bike and train commute. At first I was kind of iffy about the bikes in the living room. We only had 2 bikes at the time. We had kind of an enclosed porch we kept the bikes in, but it's not totally secure (anyone with a strong shoulder could probably break through the door latch). And it's inconvenient. So we started leaving them in during the day, if we were going to be using them. Then they started just spending the night, but we'd banish them to the back porch if we were expecting company. Then I started thinking, "well, if the people that come over don't like the sight of my bikes, well, I don't want them over." And then we started acquiring the other bikes. But I'm absolutely going to draw the limit at four bikes each. That's it. Well, four bikes each and maybe a tandem.