Caroline is a great host. Her communication is A+. Her place is extremely safe. It is gated at night and takes multiple doors to access. Make sure you keep the complete key set with you when leaving the apartment.
There is plenty of space for two couples to share. The outside terrace is a beautiful add on feature to the apartment. It is private for the guests and makes the place feel much larger. The apartment is a 3 minute walk to the Duomo and metro. There are plenty of places to eat nearby. I would definitely stay at Caroline’s place again.