We had a great time staying at Nelson and Family's place. It's in a great location with easy access to the bairra alto, Bica and Chiado and there are lots of nice bars and restaurants minutes away.
We were surprised at how quiet the flat was. There is a bar that can be noisy at weekends across the street, but if you close the shutters you can't hear it at all.
The flat has everything you need including a very comfortable bed.