Excellent location - all the sites/sights were within easy walking distance, but transport to or from the Vatican could be a good idea for less able-bodied people.
Staff were friendly & helpful. Room was clean & comfortable - but no tea/coffee making facilities, & no comfy chairs.
We arrived very late after a delayed flight, but they kept the restaurant open for us & I had the best fillet steak I've had for years. Breakfast covered a wide range of eating habits - I was more than happy with bacon, eggs, etc, etc