My boyfriend and I visited Rome and stayed at Il Sogno for four nights. Obviously, as confirmed by all the former comments and reviews, the apartment is extremely clean and well decorated. Because of the many books, bits and bobs it has a very home-like feel to it. We were amazed by all the large windows and beautiful views, especially from the terrace. My favorite part next to the really spacious rooftop terrace was the large window opposing the bed, so you can wake up with the Roman sun shining in your face (although there are curtains, if you'd like to sleep in). The kitchen has everything you need for cooking, although we went out most nights, since there are countless options in the area. Therefore I would recommend this place without hesitation and I would love to come back again!
Just a little advice for those visiting during colder seasons: The stone floors (which are very decorative) tend to get pretty cold, so bring slippers!