Mario was a great host. Our flight was delayed and they lost our luggage which meant we arrived the apartment around 2 am. Mario was still pleasant and accommodating. The apartment has a ton of character and we loved it. Bear in mind that it's on the fifth floor so you'll be climbing some stairs. Also it's a little confusing to find at first but that's due to the neighborhood not Mario's description. The private terrace is amazing and you are within a mile walking distance of the colosseum, trevi fountain, Vatican city and Gianicolo street on a hill overlooking the city!