I highly recommend Tim and Lubica.
I never met Tim but all communication with him was friendly, easy and fast. Lubica was very welcoming and shared plenty of tips on Lisbonne and the neighborhood. The apartment was the cleanest I've ever found on airbnb. Lastly, there was a bowl of fresh fruits and a nice bottle of wine as a welcome gift... What more could anybody expect ?
Best airbnb experience ! Thanks a million Tim and Lubica !