Very good location, in the middle of Trastevere, one of the best area of Rome! Many bars, restaurants etc. However it can be noisy at night because of the crowd, especially in the week end.
The « appartment » is very small, and fits more to 2 people, not really 3 or 4.
Also, dont be too late, because after 9pm they charge you 20 euros (or even more later) because they dont have a any reception or auto check in.
In my opinion, great location, but that’s it. A bit expensive for what it is…