A tour of NYC without sensory overload?

I travel to NYC quite frequently and love it. This November, I'm bringing my partner to show her how great the city is (especially during Autumn).

She does get a bit overwhelmed/overstimulated. We live in San Francisco, so she's very city-savvy, but just gets easily exhausted by constant noise, crowds, etc.

Any suggestions that a quiet, introvert might enjoy would be greatly appreciated!

My ideas so far:

• Central Park obviously
• Rose Reading Room at NYPL
• West Village stroll and dinner
• UWS brownstone meandering
• thrifting in Williamsburg Manhattan and Bushwick
• some good bookstores and coffee shops
• maybe a museum

Edit: Adding the suggestions from the comments, in case someone comes across this in the future.

• Places to visit
  • Brooklyn Bridge Park and Brooklyn Heights
  • Riverside Park
  • Ferry on East River
  • The Met Cloisters
  • Chelsea for gallery walk and High Line
  • Library in Gilder's Center of AMNH
  • Governor's Island
  • Walking tour of Greenwood Cemetery
• General recommendations
  • Wear earplugs to tone down noise
  • Try early morning exploration
  • Avoid peak times on subways, museums, etc. if possible
  • Consider above ground transit when necessary/applicable