The Cosy Nest of Nuno is exactly as described: cosy, lovely, perfectly located.
If you are going to spend a few days in Lisbon, this appartment is everything you need! The neighborood is really great and typical of Lisbon, you can walk to pretty much every point of interest and you are close to a lot of nice restaurants.
The appartment itself is perfect for 2 people, it's clean and fully-equipped.
A special thanks to Nuno and Helena for their reactivity, generosity and all the tips they share!
I would definitely recommend that place for your trip in Lisbon :)