The flat is clean and comfortable. There were 3 of us but there would be plenty of space for 4. The balcony is great.
It's in a busy central location with most things within walking distance and lots of restaurants and bars nearby. The street is lively at night because it's opposite a popular bar but 2 of the bedrooms are away from the street and we didn't find it noisy inside at all.
Eduardo gave detailed directions for getting to the flat and welcomed us when we arrived.
Would recommend to anyone visiting Lisbon