The apartment was clean and check-in/check-out was very simple. We could walk or take the Metra anywhere we needed, and Ana/Rita responded quickly to all of our messages.
However, be careful to look ahead or ask about what is going on in Alfama during your stay. The "tranquil" neighborhood was hosting a large festival/party with music playing on speakers in the streets well into the early morning hours every night. It's likely a rare occasion, but it was not a very good way to start our trip since we were exhausted from our travels and the hosts did not notify us ahead of time.