We had wonderful time at Carlos' appartment!
It's a very spacious place located in a great spot: at the sea, right at the main railway station and metro stop which also has a great grocery store and at the edge of the old city of Lisboa. You can walk to the heart of old Lisboa or take metro or train for longer trips.
It was very easy to communicate with Carlos and he was welcoming us at the apartment even though our flight was quite late.
Warm recommendation for Carlos, we wouldn't mind going again to this wonderful place!