I rescue rabbits...well, I rescue any animals, but I've rescued 15+ rabbits. I only have 5 right now, and only one is inside. I have never had any problems with the smell, but we clean her litter box every day, when we clean all the cat litter boxes (12 cats). Our house usually smells fine (with A LOT of daily cleaning), and the rabbit doesn't smell at all compared to the cats or the guinea pigs or rats.
We have a kind of unconventional set-up for our house rabbit, that you might want to think about rather than just putting him/her in a cage. Her "home" is a medium sized wire dog crate inside an ex-pen. Inside her crate, she has her litter box, and her food and water. (I don't know how much research you've done, but rabbits are sooooo smart and easy to potty train.)
She's in her crate during the night, out in the ex-pen during the day with access to her crate, and in the evenings, she hops around the house. She gets along with the other animals, but I worry about her hurting Wobie, so I try to keep my eye on her when she's out of her pen.
Good luck! Be sure to post pictures if you end up with a new bunny!
