We were very lucky to find a chance to stay at Riccardo's apartment! Not only his rooms are very comfortable for us, but also his hospitality made us really relax. He gave us enough information such as how to get his place, good restaurant and good ice cream shop in neighbor. (Those restaurant and ice cream shop were actually the best in Milan so far for us)
Also, he had kindly searched for a bike shop in his neighbor so that we could rent bikes soon when we arrived Milan.
We could not spent much time at his place since we were busy for looking around Milano Design week everyday, still we could enjoy chatting with him. He made our vacation special. Thank you Riccardo! If there's a chance in future, we want to stay at his place again.