My wife and I stayed in Luca's apartment for a month. We absolutely love the apartment and Bologna. The apartment is even larger (and nicer) than it looked from the pictures, with 4 meter ceilings and plenty of space and light. It could have accommodated another couple easily; for us, I used the extra bedroom as an office, as it has a desk and, like the rest of the apartment, good wifi and plenty of electric outlets. The apartment was obviously formerly lived in by Luca and is decorated to reflect his personality and career.
The place is in the Medieval core of Bologna, which is one of the prettiest in Italy.
The neighborhood has more cafes, bars, gelato places, osterias, pizzerias, food and other stores, etc. than anyone could ever try (and we did), being between the University of Bologna (oldest in the world) and Via dell' Indipendenza. Also, Bologna is centrally located and is among the biggest train and road networks in Italy and the apartment is a 15 minute walk to the train station, we were able to do many day (or multi-day) trips to many other fantastic Italian cities, including Florence, Rome, Venice, Ferrara, Parma, Ravenna, Verona, and trips to the beach in Rimini and to the Dolomites outside of Bolzano.
We only met Luca once; he greeted us on arrival. But we had no problems communicating with him, and he arranged for us for someone trustworthy to come in an clean for us a few times during out stay at 30 Euro.
We both highly recommend the apartment.