Our stay at Cristina's yellow house was just perfect! Although one of us is 1,86m high, we decided to stay there as it really seemed one of the best Airbnb in Lisboa. The height of the roof, the doors and the shower was manageable for the 3 days of our stay, but yes it is surely more confortable if you are smaller. The flat was perfectly clean. It was a lovely stay very close to the city center, in front of a grocery store and a Leiteria where you can have a local breakfast, and not far from a very good and typical restaurant O zé de Mouraria. Located 3min from the Metro, you can also enjoy the city by walking (30 min to Barrio Alto/Principe Reial for instance).
Cristina welcomed us very nicely and gave very good info about sightseeing and restaurants. She has been a wonderful host. Without any doubt, I would return to the Yellow House when I come back to Lisboa!