A clean and quiet apartment with everything you need to relax!
The thing I liked the most was the temperature in the apartment. Even with 34 degrees outside, it was still cool inside. The kitchen has everything you need to prepare your own food, although I would recommend to eat out and try some Portuguese food.
The location is nearby the old city of Lisbon, where you have a nice view over the city and the river. There are some bars and restaurants close by, and you can reach the city center by taking tram 28 (nearest stop is only 2 minutes walking). Personally I did everything by foot.
Keep in mind that Lisbon is very hilly, so you'll have a good leg workout during the day :-)