This B&B is actually called the "Borgo al Cornio". Whoever listed the place made a little mistake in the spelling which could be a problem for those of you who are trying to find the website (which incidently is ---).
This is a fantastic little place - very welcoming and clean and very close to the main piazza in the lovely historic centre of Prato. It is also very close to the Prato Porta al Serraglio station which means that the centre of Florence is only 20 minutes away - so why would you pay 200 euro plus for a room in Florence (with grumpy staff who are sick of tourists) when you could stay at this lovely place for 50 euros. Also Prato itself is full of historic interest, great dining possibilities and shopping.

Spent four nights here. Almost new, spotless. Family run and as warm hearted as could be. Two blocks from train station, 18 minutes from Florence. Great sights and restaurants right here.