Location can’t be beat for a holiday in Lisbon. The flat was great for what we needed and very comfortable. We have 2 kids (4 & 5) and the flat was perfect for our stay. We could easily get to key sites, find a nice cafe or place to eat, markets, etc all on your doorstep.
The only thing I’d say is that if you’re a light sleeper it might be good to be prepared as we could hear the sounds of people walking above. However, it was noted in advance and is manageable .
Overall we thoroughly enjoyed our stay and had a great trip.