I stayed at Monica's Night & Day for three nights in October. I was looking for something simple, central and flexible, and I found a treasure - Monica was very helpful to get me started and set me up with all the information I would need to have a good experience in Rome. She had all the restaurant, sight and transit information for me that I would need to get around and make the most of my stay there. I left the hotel armed with three different, hand-annotated maps to provide me guidance for everything I could possibly need.
My room was simple but beautiful, comfortable and absolutely everything I could have asked for in this price range. I shared the bathroom with the guests staying in the room next door, just as Monica had indicated, and it worked very well.
My tip: Make sure to communicate with Monica before you arrive so she will know when to expect you. She emailed me before, and I simply missed her emails, by bad - she made it all work wonderfully regardless. If you decide to stay at Night & Day, you're going to be in walking distance to everything you will want to experience, and close to transit to get you everywhere else. I would go there again in a heartbeat. Thank you Monica!