Great location, bring earplugs.
Good - Location is close to everything in central Lisbon. Steps from the metro and Rossio train station. Communication with Carlos, the host, was great. The place is perfect for one, maybe two people who don't mind close quarters. It is small, but a really cute place.
Bad - Noise at night. There are several restaurants up and down the steps outside that are noisy in the evening; and then when they close, they drag their trash cans down the steps, and the garbage trucks roll through around 11:30 or midnight to empty them every night but Sunday. The windows are new triple-paned glass, which helps, but I had to wear earplugs every night. If you can't/won't, this might not be the place for you. It is also on the fourth floor of an older building without an elevator, and the steps are narrow. Most people will be fine, but if you have mobility issues, reconsider.