Pros: the apartment looks over a quiet internal court, is on the safe ground floor (no pulling luggage up the stairs), contains all the basic cooking equipment and implements, has a double bed with a decent mattress, located in a living neighbourhood with inexpensive local restaurants having tasty local cuisine (some homemade) and a good French boulangerie. One of the best Lisbon's art museums is a mere 200m away. Three buses connect to various parts of the city; taxi ride to the centre costs about €5 as of July 2016. The email communication with the host (Miguel, at the time) was constant and his response was fast.
Cons: very Spartan inside, there is no place to hang clothes (and no clothes hangers), small bedroom has nothing but the double bed (no bed tables or chairs). At the time, the light in the bedroom has been a temporary contraption hanging on a cord plugged into the wall outlet. The bathroom is a so called wet bathroom which has to be either experienced or, at least, Googled.
Recommendation: on a balance - recommended.