Staying at Manuel's apartment was a flawless experience. He was already waiting for us at the apartment for a key handover and an introduction to the area and the habitation. The pictures describe the apartment very well, so you can expect housing in a spacious and well equipped unit.
We liked the balcony in particular where we used to take our breakfasts and dinners.
There is (small) noise from a street nearby but nothing that should disturb anyone too much in the centre of Lisbon.
We highly recommend to stay there.