An absolutely spotless apartment in a fantastic location, close to a Metro station (1 minute walk), the Port (20 minutes walk) and the main Naples Train station (about 12 minutes walk). The bedrooms are all a good size, the beds are at least a Queen size and the main bedroom has an ensuite.
The apartment also has another bathroom with a shower and a full size bath.
The main shopping district is about a 20 minutes walk from the apartment and there are loads of Pizzerias and other places to eat within walking distance. A grocery store is about a minutes walk from the apartment also.
Mirko responded quickly to information requests and helped to resolve small issues we had in a timely manner.
Overall I have no hesitation to recommend the Duomo Platinum apartments as a place to stay if you travel to Naples.