We had a great stay at Sara's. It's perfectly located in the Rome center with just a min walk to Termini and roughly 20 mins walk to major historic sites.
The apartment was exactly as it was depicted with a beautiful ceiling, and Persiane windows.
You are close to Trastevere, San Lorenzo and Monti etc.
The only thing I would mention is that the apartment is on a busy street and located inside a seemingly commercial building so it's a bit noisy, so if you need a peaceful and quiet place it's not probably for you.