Pros: the apartment is clean, comfortable, well-equipped, attractive. Trastevere is full of great restaurants, you're walking distance to many great sights (we walked to St Peters in the evening after the crowds dispersed- glorious!). Laura was attentive if we needed anything (we didn't)
Cons: the neighborhood is full of great bars... With that comes some noise. It was quite loud until very late on the weekends, but very quiet on week nights. Just know that if you're a light sleeper planning to go to bed early (before midnight) on weekends maybe look somewhere else. Otherwise, this is a great choice! We enjoyed it!