There are few positives about this place.
The rooms are basic but pleasant. The gym is decently equipped although the elliptical is about to fall apart—it has an iPod dock, to give you a sense of its age.
There are many negatives. Firstly, the staff (with one or two exceptions) are cold, rude, and lazy. Hospitality was not a good career choice for them.
The hotel is discriminatory against solo travelers. Despite the name, there is no communal spa and the spa rooms for private hire (at over €100/hr) are only priced for couples, with an additional charge per person after that. Thus, their explicit policy is that solo travelers pay double the per person rate.
The location is not good. It’s a dull, ugly area, at least 15 long minutes walking to the nice part of Trastavere.
And they pay no attention to the details. You have to ask for them to refill the toilet paper; the pillows (which they advertise as a strength) are so gigantic that they give you horrible neck cramps; there are no robes or slippers in the room; etc.