Just a heads up for those travelling to Italy, the Victor Salvi harp museum is closed for some time. I am writing this because their website says closed momentarily, just ring the day before you visit. Then when you ring, the message says closed for the holidays. But it does not have a set reopening date yet. I believe there is some restoration work in progress.
The showroom in Milan is very good though, but best to ring ahead and make a booking. Davide is very helpful.