We stayed at Sonia's apartment for 5 nights. We were very happy with it as it was very clean, new and we had everything we needed. It is in great location with the view of parliament building, easy to get to from the airport, in a quiet neighborhood, walking distance to different parts of town, well connected by public transport and close to train stations if you are going to day trips outside Lisbon. Sonia was a great host, quick with responses, easy to communicate with and very attentive making sure we are OK while we were there.
We would definitely stay in Sonia's apartment again and highly recommend it to others.