The Greenhouse is amazing. It's a modern, clean, comfortable place which will make your stay memorable! This place is in a very convenient location almost a 15min walk from the Duomo Cathedral and near to Metro station. There are a lot of shops, restaurants and cafés around there too.
Costanza is a wonderful host! The exchange was perfect and she's willing to help you in all the ways!
I would definitely recommend this place to everyone!!!
P.S. If you choose this flat, don' hesitate to follow Costanza's recommendations about your trip! Her guide is perfect! :)