Carlotta is a wonderful host! Communication with her was always very easy, she greeted us personally at check in and showed us the apartment and gave us tips regarding our visit to Milan.
The apartment is very spacious and in a great location, well equipped, and with everything nearby. We were able to walk to every major attraction in the city and only needed public transportation to get to the apartment from the train station and then again when leaving.
The only "problems" we had were that the bed was not very comfortable for us (which is a personal opinion, so as long as you're ok with a spring mattress it shouldn't be an issue) and the apartment has no AC or fans and we were there during 3 very hot days in Milan, so it would get uncomfortably hot, even overnight.
Other than that, we had a wonderful time at this beautiful apartment and would highly recommend it!