I stayed at Valerio's place for 4 months during my exchange semester abroad, and I was very happy with the apartment! Not only was it located on a street with many cafes, shops, and grocery stores but it was also an easy walk to my university. The restaurants/bars along the canals are a quick 5-minute walk away. It was also convenient to hop on the tram straight to the Duomo or less than a 5-minute walk to take other tram lines in Piazza Ventiquattro Maggio.
The apartment was small but was certainly enough space for one person. Valerio recently renovated the apartment so that the kitchen is actually in a separate "room," so one has more space in both the kitchen and living area than what the photos show. If you enjoy natural lighting, you'll want to open the shutters of the main window. Otherwise, the apartment can be quite dark. The bathroom, especially the shower, was a tight fit, but it was still manageable. Overall, it was a great apartment in the lively Navigli area!