Maria's place is as it looks on the images and inside is stylish, clean and bigger than expected. The aircon did not really cool the upstairs bedroom down so we decided to sleep on the sofa bed instead which was fine. Maria was great at communicating with us and responded really quickly, she even let us check in early which was much appreciated.
Despite this, I would not stay here again or recommend the apartment because of the noise and location. The location felt quite unsafe and was far out from the centre. It was very close to the airport, however, which was convienient for that. There was constant noise during the day (from 9am) due to building work and it sounded like someone was banging/drilling on the apartment wall. The electricity actually cut out at one point too which I presume was due to this! During the evening there was lots of shouting and loud traffic noises (despite the apartment being off a main road).
If you are visiting Naples I would recommend staying somewhere more central or touristy. The locals that we did speak to told us that we should constantly watch our bags/pockets in the area which made us feel more unsafe.