I stayed for a month at Maria's place. I especially value the area Saldanha, which is peaceful, and has a direct Metro connection from/to the airport. Linen is changed every week, including sheets and towels, which is great. Everything was great for a couple of weeks, but after that there were several days where another guest of another private room overstepped boundaries in the common toilet and kitchen. This is by no means any fault of Maria at all; however, I'd say one's experience is also partly dependent on having fellow guests who are courteous and considerate of each other when using shared spaces. Thankfully, this only lasted several days, and the fourth week was just as pleasant as the first 2.