First of all Jorge is a superb host! I speak from personal experience here as very stupidly I managed to lose one of the flat keys when out exploring Lisbon. Jorge was incredibly understanding and never accepted payment for a replacement when I know it was a pest for him as he had to get another of the keys made.
The flat is very nice with everything you could ask for and would suit most people. There are only 2 minor concerns that will not be a problem for most:
1) The area is great - very lively with fantastic restaurants very nearby. However, this means that on Saturday night when we arrived there is quite a lot of street noise - the locals like to drink outside on the streets. Not really a problem for the double room we were in but woke our kids in the twin - it was not a problem the other nights!
2) There is not a lot of storage space. Great if you are only staying for a few days like us but would have been tricky if you were a bit longer I think.
Overall though it's a definite thumbs up from me and I would recommend the location to friends!