For me, two of the most important things for a good stay are a comfortable bed and a nice bathroom. You absolutely have both of those things here. In fact, the large, thick towels are probably the best I've experienced outside of a 5 star hotel.
The location is a quiet street in Graca (though the quiet is frequently interrupted by a neighbor's barking dog), convenient to many things.
I do have some minor criticisms. With just a little more care and attention to detail the place could be near perfect. There are a lot of gleaming surfaces, particularly in the bathroom, but in several places when you look a little closer there are cracks, sometimes literally (the pieces of wood separating the kitchen from the living room). There are a couple of places where things have been left on the walls, seemingly from something used to be there, like velcro and what looks like glue. None of these things kept me from enjoying my time here, but fixing these things could lift this place up a notch and better justify the price.