The apartment has a great location, near all the hotspots. We only used the subway a few times, mostly we walked.
For people onder 1,75 m (like us) the apartment is big enough. When you are taller the seiling is too low. Also the bathroom is very small. Samuel told us he is going to break out a wall and make the bathroom larger in september.
The neighboorhood was a bit noisy, especially in the weekends.
About Samuel; he is a very kind men. Willing to help you with everything. Our flight back was in the evening, but we could leave our bags in the apartment that day, which was very kind of him.
We had a great first experience with airbnb, Lisbon and Samuel!