For my and DH's 40th present we are going (DS-free!) to Italy for 5 days.
We are around Barolo for most of it 
but have one full day in Milan before our flight back (have to be at the airport at silly o'clock in the morning).
We're not going to have enough time to get our bearings if you see what I mean, so I was thinking that a guided walking tour might be good.
Any one been on one?
Or been to Milan?
What's the best things to include without trying to cram in too much?
And where's a great place for a cheeky aperitivo?!