<p>Train is more “relaxing” than driving, and I personally prefer trains, but if you are going to need a car anyway, you will have fewer logistical hassles just renting one in Manhattan. As MSB says, you do not have to go to the airport to rent one in either Boston or Manhattan.</p>
<p>I have not rented one in Manhattan in years, but I’m sure you will reserve ahead: many, many Manhattanites do not own cars, but rent for the weekend drive out to Hamptons etc. So try not to be picking up your car at that early Fri pm prime time.</p>
<p>Where are you going to be looking at schools in Boston? Are you wanting to spend time in the city, itself, or stay more near one of the schools?</p>
<p>FYI, Logan Airport (Boston) is very close-in unlike most cities where the airport can be in a distant suburb/ex-urb. NY airports, not so much.</p>