I just came back from a long weekend staying at this flat with 7 friends and we could not have loved the experience anymore. The flat was really lovely, spacious and clean (the pictures don't do it enough justice) and was definitely comfortable for 8 people.
The host was extremely fast at replying every time, very friendly and accommodating, so definitely made me feel pretty secure about booking his flat.
The location is bang on in the centre of downtown Lisbon. Walking distance to all the main sights and very close to the famous 28 tram that takes us up the hill towards the castle.
Would definitely recommend this flat to others.