I did spent 3 great nights at Claudias apartment in the Navigli district. She nicely welcomed me, showed me the house and offered me her help in case I had any problem. At the last day I could leave my stuff in the house until the my department.
The location was perfect. I could reach easily every public transportation nearby and a walk to the city center does not take more than 25 minutes. I booked several airbnb experiences and many started or finished near the apartment. It was very quiet at night and I felt safe during my stay.
Thank you Claudia and hope to see you soon!