Laura's place is nice and well situated in the middle of the Trastevere neighborhood. Nothing bad with Laura... Good communication and nice apartment.
The problem is the tourists around the apartment. The crowd is young, very very touristic (which is ok) but very immature and unrespectful. They were drinking in the streets around the apartment until 3:30am, leaving a ton of bottles and trash in the street just outside the door. At 7am the city employees looked disgusted by this huge mess... It's not a "young" people vs adult thing here. The days before we had fun with locals drinking until 2am but the difference is that we were respectful of the others, the city, and we weren't throwing glass bottles in the streets like these animals. The human race can be very deceiving and we had a good example in Trastevere.
In short, Laura's place is great. But the unrespectful tourist crowd around: big thumbs down. A 4 hour sleep would be exaggerated. So it all depends what you are looking for.