Location was extremely good - next to many eateries, close to Vatican City and many attractions in Rome are walkable from it.
The only problems were faulty bathroom door locks (which we did not mind) and malfunctioning water heater (where the host was kind enough to pop down as soon as possible to help us with it). The wifi was not steady all the time, but apparently that is true for that entire vicinity.
Other than that, all was good; the place was clean, the beds were as promised and there was a cosy common space for everyone to come together. A large fridge, stove and cutleries made it possible for us to prepare some of our meals to save money as well (there is a supermarket just opposite!).
There were no problems with checking in, and the transport provided by the host was good and driver was friendly.
It was a great experience in total!