There are quite a lot of antique, vintage and used furniture stores in Leslieville which are really just jam-packed pack rat's palaces that may remind you of those ugly hoarding reality TV shows.
Good thing G.U.F.F. is not one of them.
Their retail floor is never overwhelming, even after neverendingly finding all sorts of interesting stuff to keep it filled. This is indeed the place in town to find vintage midcentury Scandinavian style furniture... or get what you need to turn your measly downtown condo into something resembling Don and Megan Draper's apartment in Mad Men.
Some may oogle at the latest new arrivals they post on their website, while others like myself enjoy peeking at their storefront window and the items they put out on the sidewalk on a beautiful day.
There have only been a couple occasions where I finally for once went in, at one time when I needed a specifically-sized coffee table and a chair. Found a nice teak table that suited my needs--nothing that a handy tape measure can't verify. Negotiated a good price for the haul. Staff are friendly, but are dumbfounded when I told them I don't have car, and intend to bring it all home with two arms--they did offer to loan me a dolly.
Do be amazed at the quality and beauty of the furniture they source and sell. Don't be amazed by how quickly that table or couch you've been eyeing online have just been sold to a guy who literally walked away with it.