We're taking my mother in law to see Pompeii and Herculaneum in mid May. We're mid 40s and she is 78 with hip replacements so can walk but not miles and miles or too uphill. Does anyone have any recommendations as to what town we should stay in? She likes 4 star hotels, we will fly in to Naples and want to eat out each night. Will everywhere be hilly? Can we get buses/trains everywhere? Any advice appreciated!