This is a good apartment in a very good location. Graça (the area of the apartment) has the amenities you'd expect (supermarket, mini supermarket, restaurants, cafes) and has good public transport links and is close to the main train station of Lisbon. João provided useful tips of where to eat and what was nearby, including great views over the city.
The apartment was has well-sized rooms; the front bedroom is particularly spacious, and there's plenty of equipment and space in the kitchen. This is an apartment that is primarily used for renting out, so you won't find as many of the bits and bobs that are sometimes useful, but there is a small collection of books, DVDs and kitchen essentials.
The apartment is on the ground floor and quite long, which means it doesn't get quite as much light; the living room area is adjacent to the courtyard, but still is fairly low in light and so needs artificial light throughout the day. This wasn't a big deal, just something that made being indoors during the day a little less good.
The bathroom is a good size and there was some shampoo available; the shower holds a steady temperature and comes out at a good rate, but the shower fixing is low so unless you are short you'll need to hold in in your hand or duck. Everything was very clean.
João responded promptly and helpfully to every question and is a great host. We were met by his agent in Lisbon, Ana,.