“But Mike, I have a 150cm x 200cm vintage rug that goes PERFECTLY with my room. Can I really not use it? Fear not invented reader! You can put that beautiful vintage rug on top of a larger rug. Yes, it is totally legal and can be great if you find the right combination.
The almost foolproof way to try this is to choose a natural jute-type rug as a large base and then put a smaller rug (with a different colour and material) on top and in the middle. But if you want to be even more of a rogue, you can offset them as long as the front legs of your seats are on one of them.