Mario's flat is cozy, convenient, and clean, just what I was looking for. Location is great, the majority of tourist spots are within walking distance. The flat was nice and quiet and I was able to feel at home. Mario came to help when I (thought I) couldn't get in, and also gave me loads of information on where/what to see! Very helpful, and can tell that he takes hospitality very seriously!
Make sure to take advantage of the cafe at the nearby breakfast as well. All in all, this place is a great value for money, and I hope to come back again!