Joana's house is in the BEST area- just a short walk to everything you wish to do and see in Lisbon. The decor is nice and she leaves wine and snacks for guests upon arrival. However, please be aware that my friend and I had communication issues with Joana and were also pressured to pay the late check in fee after 50 minutes when our flight was delayed. We repeatedly tried to convey this to Joana but got no response. We felt this matter was outside of our control and would have appreciated a small grace period as we spent A LOT of money staying at Joana's for multiple nights. Additionally, the apartment had an odor and there were dirty clothes under the bed from the last tenant.
Also note that while there IS a washer, there is no dryer. Additionally the front door was extremely difficult to open and 2 different grown men gave up before a 3rd could open it. This is partly because Filipa, Joana's colleague, did not explain specific apartment details upon check-in.
Joana runs her Airbnb like a commercial business with young and inexperienced employees doing the grunt work. We never met her, although my friend and I would have liked to- as that is why we choose Airbnb over hotels (we like the personal touches and interactions).
I hope you have a better stay than we did- as this Airbnb has great potential!