My wife and I (mid 70’s) are spending 3 days in Athens after debarking from a cruise. What area in the city would be best for choices to stay for restaurants, shopping, and easy walks to some attractions. Thanks !!
Plaka district is a favorite among visitors. Locate it on Google Maps here:
https://maps.app.goo.gl/tCz6cQX7Nh52wUES8
As you can see it is next to the Acropolis.
It is lively, full of hotels, AirBnbs, restaurants, bars and shops. It's mostly pedestrianized, so from there you can visit most of the main sites by walking.
Of course you can extend your search a few hundred meters around this area.
Post other questions preferably in the dedicated Greece forum:
https://community.ricksteves.com/travel-forum/greece