I stayed at Andre & A for 6 days and it was a wonderful experience.
The flat is very conveniently located 5-10 min from Porta Garibaldi Train Station, which is a major hub for metro lines and trains to the airport. It is also 10 min from the famous Corso Como, where aperitivo can be easily taken after a day exploring the city (which can be done walking by the way). And for those arriving or departing from Central Station (Stazione Centrale), it's just a 15-20 min walking distance.
The flat itself is perfect: spacious, extremely clean, with everything needed. It's even better than in the pictures now the sofa bed has been replaced by a real bed in the sleeping area. The white sofa bed is now in the living area, with the other one.
I did not get the chance to meet Andre & A during my stay, because she was in holidays, but she conveniently arranged with one of her friends for me to get the key when I arrived. She was very responsive and we exchanged some messages before I flew in. She even sent me messages while I was there to get some news and inquire if everything was fine for me.
Andreina is a 5 star host, and the flat is a 5 star experience that I truly recommend to everyone coming to Milan!