Herberto's apartment is perfectly located for spending time in Lisbon. It is on a quiet street in a residential and real-feeling historic neighborhood with young families and people going to work. It is NOT in the midst of the tourist bar and party scene, but there are plenty of nearby places to eat and drink. Walking in any direction from the apartment is interesting. A 10 minute walk gets you to the Rato metro station, so you can easily access the whole city.
The apartment is compact, very clean, and has everything you need to be comfortable. Great for a couple. The bathroom is newly (and solidly) remodeled. The living room has a street view and the bedroom window overlooks neighboring gardens. As a bonus you can see the Portuguese parliament building from the toilet!
Herberto himself is responsive and helpful. He offers both practical advice and suggestions for things to do in Lisbon. We would happily stay at his place again!