Several years ago, I had an indoor bunny. It did not work out for me. Marcus was a sweetheart, but oh boy, did he smell! I cleaned the cage regularly, but could still smell him. We ended up putting him outside. Truthfully, I think he was happier. My rabbits are in a hutch with wire all around. They seem very content. At the moment, I have feed sacks stapled to the sides and back (I am so much of a redneck! LOL) because it has been so cold here this week. As soon as it warms back up, I will take the sacks off. We will put plywood on the sides and back this winter. I also freeze water bottles for the really hot days. They will stretch out right beside them. Rabbits can handle cold much better than heat. Good luck.
Blessings,
Winona