I stayed in Carmen's place and honestly I have nothing to point out.
She was incredibly helpful and kind and explained me everything about the bus and tram system, which I found very straight forward. By the way, there is a bus line outside the door that can take you to Prado São Sebastian with good frequency, the 37, but there other lines near by.
Carmen's place have all the tools that you need to cook, it was clean, nice, pleasant and quit. The neighbourhood was also good.