This Library has been on my 'bucket list' for quite a few years, and I almost made it there once. We purchased tickets on the internet during a trip to NY and saved the Library for the last day... which turned out to be very stormy, and we received an email the night before stating the Library would be closed the next day.
Our next opportunity was earlier this month when we were in the city for 3 days. As I am recovering from a broken ankle and finding it difficult to walk long distances, I was happy to see on the website that wheelchairs and walkers were available for guests. This time we decided not to get tickets in advance, which was not a problem as it wasn't crowded.
The building is as beautiful and luxurious looking as one would expect it to be. The Museum is small and not overwhelming, we spent about an hour and a half there, not including a break for coffee in the café. We were lucky to see a display of a newly found piece of music in the Library, written by Chopin in his own hand. It had gone on display the previous day.
There are many volumes of books along the walls, and some illuminated handwritten volumes open behind glass to be admired. And, a very interesting exhibit about Belle Greene, a talented woman that helped build the collection, and was the first director of the museum. Her personal story is fascinating.
Though not something I would normally pay attention to, I'd like to mention that the Library and Museum are accessible, it's easy to request mobility devices (the aforementioned wheelchairs and walkers), and to move about the museum with them.