My folks just love Boston, and I could easily see them moving there! It is one of their very favorite places to visit.
If they were looking to move there, and since they are empty-nesters, a condo would be the ideal living situation.
And here is a great place to look for Boston Condos. Realtors, developers, and owners can list condos for sale on their site - this way potential buyers can bypass any middlemen, by finding the contact information of the listing agent or owner of each condo right on the site!
They've also recently launched a very helpful program called "Building Specialists", which deals with a real estate agent who specializes in a particular condo building.
So I think if my parents were ever to decide that they did want to move to Boston, I know exactly where I would send them!