Hi,
And I even had the privilege to play a recital there! On a 1846 Streicher. The Frederciks couple run the concerts for 18 seasons; the pianist or a chamber group perform a program suited for the period of the piano. The oldest instruments are only played by people who make it "their life," so to speak. Some of the concerts occasionally show up on NPR, do not miss! The effort and the achievement of these people are unique. All the instruments are in playable condition and have most of their original parts. I didn't have my views and understanding of the instrument so fundamentally shaken (and refreshed) for a long time.
If you are a MA resident, you are invcited to my next concert there, May 18, on a 1870s Bluthner with late Brahms, late Liszt and Tchaikovsky.