I found Luigi's apartment to be very comfortable over the course of a two-week stay. Some reviewers noted that the apartment is a bit smaller than expected, but I found that folding up the futon during the day made it feel much more spacious. While the electrical stove does take some time to heat up, it is a very valuable feature and helped me to save a little money over the course of my trip.
The apartment can get pretty warm in hot weather, but keeping the windows open and occasionally turning on a fan that Luigi provided helped to keep things comfortable.