Have experience with 5 rehab/nursing homes for various reasons and family members in MA, but none in NH. some things that you may find useful. We found the day to day staff in “rehab” section may be very different from nursing home section of same facility, so I don’t recommend just going on experience of friends that have been there for rehab. Recently had a friend with 98 year old mom, had short term rehab, loved it, then moved to nursing home same facility, hated it, different staff, routines, etc…
There is a search tool that gives some nursing home ratings, and in my experience the ratings have been a very good indicator of the actual care at the facilities we’ve used:
https://www.medicare.gov/care-compar...pe=NursingHome
Good luck with your search, its a challenging journey.