I have loved it so far.
In my vanilla save, I got a whole household inviting themselves over and it led to some funny drama. My poor single dad just wanted some help and he ended up wrangling rowdy houseguests and twin babies!
In my legacy save, it was so amazing to be able to invite the grandparents to stay after a new baby arrived. They were able to help with diaper changes and late night feedings. Probably would have been better if they didn't die from old age during their stay, but otherwise a great visit. :p