This is a good apartment in a extremely good location if Chiado is the area you want to be. The Metro is five minutes walk up the street, plenty of places to eat around including a couple of markets where you can buy fruit and other everyday stuff, quiet-no street noise. It is very clean, linens and towels are fresh when you arrive, and lots of sunlight with a view of the river and statue on the other side. Good security and I always felt safe. The street is a bit difficult to find at the beginning but there is a Hermes shop at the top of the street so you can always find your way home. The only caveat is that it gets very hot in the summer and there are two fans, one big, one small but no AC.
Would definitely recommend this place if it meets their requirements.