Andreia is a perfect host, and even though she was on vacation herself she communicated with us regulary and made sure check-ins and so on were taken care of. The apartment itself is super cozy and fits perfect for couples. A big + in my book is the washing machine in the apartment, which means you don't have to bring to much clothes and pay for expensive baggage. I also enjoyed being in the 6th floor, having a bit of a view of the street and the park right next by. If you want to cook your meals at home the apartment has everything you need of equipment, and the kitchen is clean and newly refurbished. The bed is comfertable (not too hard, which we have experienced before in other places)
The apartment is located in Amadora, a 12-15 minutes trainride from Lisbon Downtown. A big positive in that regard is that the train station is only 2 minutes in walking distance, and the tickets to Rossio (Lisbon Downtown) are cheap. ~2€ to 3€ per person.
Amadora has a number of stores to buy food, as well as Pastelarias (Bakeries/Cafés) that are open from early in the morning until late at evening. By all means, do eat Portugals baked goods as they are DELICIOUS.
If we are to mention a recommendation, it would be to visit a restaurant called Honorato. They make great burgers and have one of the best drinks I've ever had, called Berry Nice. Give it a try! Prices there are reasonable as well.