Thanks all! Appreciate the quick and detailed responses, especially about the difficulty of driving. I would be happy to do train travel so will check the train routes.
I am sure I will have more questions after I read the responses in more detail and do more research. My DH has been having some difficulty walking and walks very slowly due to neuropathy and arthritis, so have to figure that in as well. But I also could spend my days walking the city!
Appreciate any other recommendations!