Those old New England towns have seriously tight streets, a bike's definitely the smart choice for navigating them. You'll spot stuff tucked away in alleys and side streets that cars can't even reach. There's peer-to-peer platforms now where you rent bikes straight from owners, not rental companies. Cheaper usually and the bikes are actually maintained since it's someone's personal ride. You can rent a motorcycle here
https://getrentacar.com/en-US/motorcycle-rental . Browse what's listed near Boston or Providence, message owners about dates, meet up and ride.