The best thing to this place is the location; it's in view of the Pantheon, perfectly in the middle of what you'll want to be doing in Rome. It's not a bad walk from bus, metro, or taxi, either. Beds were comfortable (even the pull-out), and it was a nice space to just hang out in and listen to the bustle outside. Bathroom was spacious, it wasn't too loud at night, and the curtains blocked the light well.
Make sure you bring your own hand soap (and dish soap, if you'll be doing dishes). We were given instructions for the hot water, but we couldn't get it to work at all (super cold showers). It could get a bit stuffy as there was no fan or air conditioning. Check-in was a bit difficult because we weren't sure which doorbell to ring and no one answered when we started just trying bells. Finally, someone (not our host) just came down and took us up.
Overall, not a luxury spot, but I'd still recommend it. It was nice enough and super well located.