I have a rabbit. A Mini Rex specifically. They can make excellent pets for a family but there are certain things to consider, like with any other pet.
They need to chew on things on a regular basis in order to wear their teeth down, and as a result any wood, cords, plants, etc etc etc that they can reach they will potentially chow down on. My current one used to have a particular affinity for the canvas material I used for the walls, ripped it up from the baseboards in a few places. I just give mine a large board to gnaw on and that seems to be work, but even so it still bites other things sometimes.
Another thing to consider is that rabbits are extremely social creatures, if you only get one, you'll need to pay it plenty of attention.
Their nails also grow and need to be clipped on a fairly regular basis, you can do this yourself if you learn how or have a professional do it. I do it myself with the help of a second person, but in my experience it isn't exactly something that they'll like having done to them, so if you aren't confident enough to have someone hold them still while someone else cuts their nails that's something to consider as well.
They're easily trainable to a little box and water bottle in my experience, but will probably poop outside of the cage some still. Luckily its in the form of a compact dry ball so it doesn't make much of a mess. Just be aware that they do produce cecal which is processed food that they then re-ingest to process for further nutrition. The cecal IS wet, unlike the normal feces. If an animal re-ingesting its already-been-eaten food is disgusting to you, I wouldn't recommend getting a rabbit.
And they're crepuscular animals, meaning that they're most active periods are during dawn and dusk, mine will sit for hours during the middle of the day and not do much of anything besides go in to eat and use the bathroom.
As far as putting it in the yard, there's no way the one I have now could ever go outside, its the most high strung animal that I've ever run into and gets freaked out at the slightest strange sound. My last one was the complete opposite and nothing bugged it, so their personalities can vary widely. There's really no telling exactly how an individual animal will be until you get it home and have lived with it for a while.
You don't have to walk them, or bathe them. Just feed and pay attention to them and they're happy. You do have to be careful what sort of food you give them. They need a certain type of hay depending on their age and there are plants/foods which are toxic to them which you can read more about here: