Went there last week and it was very beautiful inside, particularly the fan vaulted ceiling, the choir benches and the golden organ. The side rooms were full of history about the red and white roses (Tudor dynasty, the 3 kings who built the chapel: Henry VI, Henry VII, Henry VIII), as well as the construction techniques and architecture. I lived in Cambridge since 2012 and honestly this is the second best tourist destination in Cambridge. (the first is punting)