Andrea del Castagno painted it, as reported in the note on the side of the work.

It is one of the seven Cenacles present in Florence. It is located in via XXII Aprile, in the Benedictine Monastery, now a museum.

The most interesting character? for me Saint Thomas. Here he is looking as skeptical as he does.

The first Last Supper I visited is this:

https://gigliocooking.blogspot.com/2018/03/the-cenacolo-of-andrea-del-sarto.html

I will post the other five missing ones in the future.