Luca and Marilla were absolutely fantastic. Their place is very nice, clean and located in the wonderful little neighborhood of Pigneto. It's not far from the city center where you'll be able to see everything that makes Rome famous to the world, (the Colosseum, the Pantheon, the Vatican, etc.) but it's outside the tourist madness zone. It's a genuine way to experience Rome the way young, Romans really live it. Luca and Marilla were extremely gracious hosts and fun people. I would highly recommend staying with them to anyone.