First of all Marco is the perfect host - he will provide all the information that you need about transport, main sightseeing, how to get to different locations in Napoli and so on. He left us maps, dictionary, full fridge with drinks and snacks. Second the apartment is exactly like the pictures - everything is clean, comfortable and furnished very well. The apartment is right in the historic center of Napoli so all the main tourist destinations are 15 minutes away including the train station. And no matter that it is in the center it is quiet enough (I assume that it's more crowded in the summer and still it's quiet enough to rest properly). It is also a minute away from via Tribunali where you can find many wonderful places to eat and many things to explore. If you want to taste the Napoli streets and see how people live and mingle with them do not hesitate and book it!
Third - Safety: probably most of the tourists have read many negative comments about Napoli and how it is dangerous, you may get mugged or anything - please do not believe that! Napoli is amazing city with great history and many things to see.It is perfectly safe (including Marco's place) as long as you take the normal precautions. Don't bring all your money with yourself, beware of the scooters and overall enjoy Napoli!
Thank you for everything, Marco, you have been wonderful! Hugs and kisses from Bulgaria!
Vasilena and Petko