Most people think of indoor/outdoor rugs as outdoor rugs, that look like indoor rugs. They can certainly be described that way, they’ve come a long way since the fake grass look, but I actually like indoor/outdoor rugs indoors as well. They are very durable and easy to maintain. They may not be your softest, plushest carpet, but they sure make cleaning up soggy, mashed in goldfish much easier than on a rug with higher pile.
We bought our living room rug a couple of years ago and have been very happy with the decision to get an indoor/outdoor one. They work great in areas with kids and pets. I also like the idea for kitchens where there’s a lot of traffic, water, and messes. If you’re considering one, here are a few to take a look at.
Also…regarding sizes, the rule has always been to have at least your front furniture legs touching the rug, but when in doubt, I think it’s always best to go bigger. There’s nothing worse than an area rug floating in the room.