Sam was extremely welcoming and helpful, the check-in went smoothly.
The location is great. The tourist street just near the apartment is cozy, with many cafes and fado places. It's very quiet at night. The main square is just 15 min away, with lots of viewpoints, churches, and other sights even closer. Also, the train station and metro are nearby.
The apartment itself is an old-fashioned real authentic, where real people lived, not fake-fancy authentic apartments for tourists. There are pros and cons because of it, It's hard to explain, but I think everybody understands.
Even though such an apartment is quite challenging to maintain clean, I was delighted with the cleanliness. It was much cleaner than I could ever do myself ;)
It also has a gas water heater, so the water was hot, and the temperature was stable. All four people can shower one by one, so it won't become cold.