Dino's place was fantastic. The flat was spacious and clean.
Despite having some issues getting to the flat (we didn't know there was a festival which meant they closed multiple roads and it was impossible to pass with the car), Dino was patient and waited (almost searched) for us.
The place is right in the middle of the city, right next to the castle; it really cannot be more central. Still we were surprised as to how quiet it kept during the night.
If you're travelling to Lisbon I would really recommend this flat.