I stayed in Luisa's apartment for 1 month and would highly recommend. The apartment is exactly as pictured and was great for a long-term stay, including quick WiFi and a desk which was perfect for working.
The area felt safe and friendly, with lots of supermarkets and restaurants nearby. The apartment is in a great location which is well connected by bus/tram/metro to all parts of the city. It is less than a 30 minute walk to the Castello or to Navigli.
Luisa was very quick to respond and fix any issues, the check-in process was easy and Luisa was friendly and helpful throughout. She even provided some food in the fridge for my first evening which was a lovely thought. I would definitely stay here if I visit Milan again!