I had a great experience with Mario's place. It was perfect for what I was looking for -- somewhere that I could work from and just enjoy the day-to-day life in Rio de Janeiro, maybe get some insights from someone who's lived there for awhile. I really liked that Mario let me have my space. Even though there's a very pleasant shared terrace outside, he's not paranoid about what you're doing in his apartment -- he really thinks about it as your space when you're there. I found the room very comfortable, good bed, maid service every 2-3 days, and quiet. Mario's done a good job soundproofing, though he warned me the neighbor with whom he shares a wall can sometimes blast music. It only happened briefly when I was there, on an early Sunday evening, not a problem. I slept really well there, even better than at home at some times! I hope you'll enjoy the place as much as I did.