As silverlinging48 says look on the care inspection website and call in to the care home. Pay particular attention to the registration facts. I.e. Is the care home registered for dementia cause if it just says they can manage dementia this is not the same as being registered for dementia. You want a condition of registration which will cater to advancing dementia to avoid your loved one having to move if/when the condition deteriorates. It's not easy so to select even with all the information to hand trust in your own senses. Seeing, smell, hearing and sight. Good luck.