In a rental and I didn't want to mess up the walls, so I picked this up and it works wonderfully. I believe there's a 1 bike version as well.

http://www.amazon.com/Delta-Michelangelo-Two-Bike-Gravity-Storage/dp/B000ACAM38/ref=sr_1_1?ie=UTF8&qid=1454038422&sr=8-1&keywords=bike+rack+indoor

link

link for canada

We've been happy with this one: https://www.amazon.com/dp/B000ACAM38/ref=cm_sw_r_cp_apa_USLpyb9PP30V0. Only complaint is it rubs paint off the wall if you aren't careful. Super easy to use and always moveable if you have a different spot in mind

I use one of these in a wide hallway. It saves me lots of space. If you only have one one bike, you could put it on the top to keep it out of the way. https://www.amazon.com/Bike-Bicycle-Floor-Stand-Storage-Rack/dp/B000ACAM38/ref=cm_cr_arp_d_product_top?ie=UTF8