This apartment is a couple blocks away from two of Napoli's reference points: Piazza Plesbicito and Via Toledo. If you like walking you could also find yourself in Quarteri Spagnoli which has a ton of local food/restaurants and bars to enjoy Napoli the right way. The transportation system in Napoli is pretty good. From Martine's apartment, you are a couple blocks away from bus stops and metro stations that feed well into the major Napoli Metropolitan transportation system which takes you to places like Sorrento, Salerno, Pompeii, Herculaneum., etc. The AC in this apartment is great specially if you are coming during the hot summer months. Also WiFi is pretty solid!
The only kinks that I would point out about this place is the front door makes an annoyingly loud noise every time you walk in the apartment, so if you are coming in late at night you may wake a few people up. The other one is the water in the shower goes from hot to warm/cold intermittently when you are trying to do a hot shower. Also, I'm the front door entering the apartment complex, you should be extremely careful as you could bang your door pretty easily. These are really tiny things that should not take away from how centric and strategic this place is as well as cozy. Thank you Martine!