I would highly recommend to stay at Luigi's place, since there are many reasons for that. First of all, Luigi is incredibly hospitable, very kind and generous person. He knows a lot of unusual and interesting stories about the city, and eagers to share it with you. He gave me a lot of tips about the city, giving me an opportunity to experience the city with the local food, culture and the heritage. Also, he was very flexible with the check-in, and kindly let me to leave my backpack (and also my friends' backpacks) before the official check-in hour. I appreciate it very much.
What about the room itself, it was very clean, enough big, and furnished accurately. The apartment was in the 5th floor and had a cosy balcony, which was accessible from the kitchen. The kitchen had all the necessary things for cooking.
I would love to stay there also next time, when I visit Bologna. Thank you for hosting me, it was an incredible experience and a very big pleasure.