Massimo's place is a perfect spot for enjoying the city of Naples. There are two easy to locate parking lots (one close, one very close for more $) to park your car safely. The apartment is stylish and has all the amenities you need. It's very centrally located in the city with a mile walk in any direction landing you at something incredibly historic, or very memorable.
As you've read, the shower is more of a bathtub with a shower curtain and an extendable shower head (nothing that should deter you from staying here). Massimo and his friend Sasa who let us in the apartment were both friendly, and super good at communicating through WhatsApp. They gave us more ideas for cool things to do than time we had to do cool things! Great place. Be careful driving in the city though, it's a trip for sure.