Tiago is a great host, helpful with every question we had. The location of the apartement is great, altough the streets can get a bit loud at night, but it didn't bother us, we could sleep normaly. The station cais do sodre is very close, from there you can take varius buses and trains and ferry's to nearly everywhere you want to go.
Near the apartement there are a lot of good bars and restaurants which you can access with 5 - 10 minutes of walking. If you want to get a feel of Lisbon this is definetly the apartement and the location for it. We had a great time!