We stayed at Fra's for 2 nights in August for our first time in Milan and overall we had a great stay.
It was very hot, around 35 degrees, every day that we were there and the air con was more than adequate! The terrace was also great (and very big) for both sitting out and drying washing. The access to Netflix was also a nice touch.
The apartment and car parking garage were both very safe and secure and we both comfortable in the neighbourhood.
Almost directly opposite the front gate is a local supermarket and around 5 minutes away by foot is a Lidl which is always handy for the essentials (although the apartment does have a few things such as pasta, oil, cleaning supplies etc.). Also around the corner is a gelato shop (La Gelateria Della Musica) which is apparently very highly rated in Milan. It is very reasonably priced and delicious!
With regards to travelling into the city centre, I'd suggest downloading the ATM app for tickets and travel cards. I think there is a bus stop outside the flat but we walked to the tram instead which was about a 10 minute walk away. In total it took us about 30 minutes to get into the centre of Milan from the apartment.
Although we never met Francesco, booking, checking in, checking out and general communication with him was perfect. We did however meet Matteo who checked us in and he was very helpful, friendly and quick to respond to any queries. Fra was also kind enough to send us a big list of recommendations on things like places to eat, drink and visit which was great!
One small note to mention is about the parking which is very tight. We arrived in a large family saloon which was a tight squeeze (but still doable) into the garage. A small car would have no trouble whatsoever.
Overall we would be happy to stay here again!