I spent a wonderfull time at Alexandre's apartment. It was very clean and the apartment is exactly as in the pictures.
Alexandre was a very good and welcoming host. He gave us a lot of tips and advices on where to go in Lisbon and where to eat. He is a very kind and open person.
The apartment is a bit cold, so I would advice on bringing warm socks and a sweater.
I can highly recommend staying at the charming Alfama apartment.