Very creative apartment! If you like rock music, black colour, posters with different kind of "evils" - you'll appreciate it :) I'm not very deep in that kind of stuff - so I just feel myself comfortable. It is pretty big apartment and the room is spacious with a balcony. A little bit dull light, but if you're not going to read books being in Rome, it doesnt' matter :)
Kristina and Alessandro will suggest you tea, coffee, cookies etc. for breakfast - which is pretty kind. Also you will meet the great black cat Lucifer who is absolutely not so threatening as it sounds ))
Location is good. Calm and quiet. To reach Vatican and more central Rome places you would need to use the metro. Actually not a problem at all, as the metro station is about 7 minutes by walk from the apartment (Cornelia metro station).
And what is also great is that the bus station to catch a shuttle to Fiumicino Airport is 5 minutes walking from the flat. Very-very convinient and pretty cheap - 6 EUR. If you need Ciampino Airport - just take a metro to Termini station (1.5 EUR) where you can further take a bus directly to Ciampino (5-6 EUR).