Briefly: there were a couple of issues with the apartment, but Filippo made everything possible to fix them and make our stay better.
During our stay, the toilette stopped flushing. Filippo quickly responded to all my messages and came several times to the apartment to fix it. Also when using AC and the lights in the bedroom overloaded the line breaker and the lights shut off, Filippo offered calling an electrician to fix the issue.
Other than that, our stay was perfect: clean apartment, good location, comfortable mattresses, quick communication. If I come to Milan again, I would be happy to stay at Filippo's place again.