My elderly mum lived with us prior to her death, she was half mobile, we adjusted the house (stairlift, removed rugs and things for wheelchair etc).
Pro's- we were able to spend loads of time with mum, she could be involved in our "family life", she wasn't alone.
Con's - we always had to give thought to doing anything, what about mum? We defacto changed our while lives to "care" for her, had she eaten, what does she need, washing needs doing, beds need changing, everything. Yes she has carers coming in, that can change to your house but every household member needs to agree.
Looking back id not change what we did, her life was extended and she wasnt alone, and we got that time with her; but it wasnt easy.
It all depends how dependant she is, Is she able to mobilise at all? How much support could you out in place, services could switch from her home to yours but everyone needs to agree.