I spent 3 very comfortable nights in Giorgio's apartment and can not fault it. The apartment itself is lovely; bright, very spacious and spotlessly clean. Many breakfast items and snacks were thoughtfully set out in the kitchen and the fridge was kindly stocked with bottles of water, juice and coffee.
The bed was very comfortable and the towels and bathroom accessories were wonderful. The shower (x 2) has high pressure and very hot water. Air conditioning was an added bonus on two very hot days/nights.
Whilst I did not meet Giorgio, he was very responsive by email and phone. Instructions were clear and obtaining the keys from the 'porterina' on arrival was easy and friendly. There were a couple of teething issues at first with wifi and electricity, but these were quickly resolved by email.
Giorgio was extremely kind in being relaxed and flexible with both arrival and departure times.
As a tourist and a solo traveller, however, my only disappointment was the apartment's location. It is about a 20 minute walk from central station and is situated in a housing complex that felt rather isolated. The neighbourhood has little charm and is semi industrial. A big supermarket is nearby. There are a few shops and a bar or two down the road. It is not in walking distance to any of Milan's iconic areas or districts and there is no nightlife. The closest metro station is 'Rovereto' about a 10 minute walk (through a long noisy tunnel under the railway tracks) which is 6-7 stops to 'Duomo'.
On Wednesday, as other reviewers have noted, Via Gianfranco Zuretti is closed to a wonderfully vibrant local street market.