It was perfect! Luca picked us up in the Central Station eith his own car and brought us to the apartment. He explained us all we could do(related to tourism) and in the flat there was also all the information needed to visit Milan.
We are very happy with Luca!
Moreover the flat is located 15min away to the Duomo/City center and it is very easy to go anyehere from there.
Summarising, if you go to Milan, try it with Luca, you will be satisfied.