The apartment was just as it was described on Airbnb and as shown in the pictures. Isabel was also a pleasure to work with and very responsive.
Keep in mind about the apartment are that if you're traveling during the hot months, there's little airflow. There was a fan but no windows in the room. We couldn't sleep with the windows open because they face the restaurant/bar areas and the music was pretty loud at night.
It was nothing bad on Isabel's part but there was a constant sewer and fish odor permeating throughout the apartment and outside areas.
The apartment is close to public transit, which was fantastic. We were easily able to walk to the underground metro and get to all of our destinations. Another thing to keep in mind is that there are LOTS of hills, steep stairs, and uneven roads. You should definitely bring good gripping shoes to walk around in, especially around Alfama.