We were 7 adults and 1 child and overall we were very pleased with our stay here. We love the neighbourhood as there is narrow cobblestone streets, tons of restaurants and cafe's and best of all, lots of Fado options which is a definite must do while in Lisbon. The apartment was clean, well decorated and has the most lovely view of the water. The beds actually weren't bad either considering some of the beds we experienced in our 4 week stay in Europe were not exactly what we were used to in North America :) This apartment does NOT have air conditioning but every room has a fan and big windows that can be opened to let in some fresh air. However, at night the street below can become a bit noisy from people in the restaurants and cafes so keeping your window open may not be an option for a light sleeper. Like most apartments in old European buildings, there is not elevator so just prepare to do some stairs with your luggage!
The hosts were absolutely lovely, quick to respond and provided a lot of suggestions for things to do along with which bus/train to take to get there. With all this being said I would definitely recommend this apartment for anyone going to Lisbon.