Everything you need to know for your assessment:

The 6/5 worthy pros:
1) The location is the most clutch you could ask for while staying in Rome. It is literally 100 ft from central station--less than a block--where you'll find the metro for vatican city & the coloseum/ancient rome, and the buses for other areas. It's a 10 minute walk to the Pantheon, Spanish Steps, and few minutes longer to Piazza Navona (this place you have to go to). Anywhere else would have been less convenient.

2) The place- for two OCD people, we were completely satisfied with how clean everything was. Not one complaint. The booklets for how to get around / places to go were very helpful and largely echoed our Lonely Planet book.

3) Melani, when contacted, is prompt and helpful.

The 3/5 cons:
1) WiFi internet. This was a big problem for us, because we were totally relying on it for, largely, communicating with Melani! We searched long and hard for a host that was rated to be very helpful. I have no doubt Melani is, because every time we WERE able to reach her, she was prompt and very helpful. But given no mobile service, not having internet at home left us in the dark the first day where I had to figure everything out myself unable to communicate with her. Eventually informing her, she recommended a second network that was supposed to work better, but it didn't exist on any of our four devices though half a dozen others did. There are random restaurants with free WiFi however.

2) Hot water- my wife likes hot showers, so the first day she tried taking one. The hot water went away in 6-7 minutes and was very cold after that, and I had to take a cold shower afterward. Since then, we both took lukewarm showers stopping it while putting in shampoo, soap, etc. This may have been unnecessary and it may have lasted on lukewarm for both of us, but we didn't want to chance it. Because when the hot water is completely gone, the water takes the breath out of your lungs its so cold. Like I said, it may last two lukewarm, but two back to back 10 min hot showers are not possible.

All in all, if wifi is accessible this is a complete win. If you also are relying on someone who can help you while you're there and can contact Melani I'm sure she's great. The location is unbeatable.