Rui was one of the most welcoming people I've stayed with through AirBnB! He made us breakfast for 2 of our mornings and even packed us croissants before our flight out. The place certainly is "a house of books," and had a lot of character. The place was a bit cluttered, but we were still comfy there. The location was great and a short walk down the hill towards the Alfama District and the central tourist locations. Would recommend!