Fyodor and Nataly were remarkable. For a gringo with no Portuguese under his belt, they were a godsend in helping navigate the neighborhood (and Rio as a whole), and incredibly communicative and responsive to all needs. Any small problems (as to be expected in Rio) were immediately resolved. They recommended yoga instructors (I took advantage of yoga lessons on the beautiful terrace overlooking the favela), massage therapists, and a maid (who was among the best I've had).
The place itself was great; an amazing central location with easy access to the beach, supermarkets, and dining. Artful touches and literature made the apartment feel more like a home. A/C and wifi were both reliable, making the stay very comfortable. The rooftop grill was well-utilized. Comfortable beds, ample towels and linens, and even yoga mats and flip-flops / sun hats all came in very handy. It felt totally safe walking around, even alone at night, on a well-policed street, and 24-hour security made me feel secure and at home. The terrace view, especially at night, was magical. It was easy to work from home for the month of my stay, and I'll be sure to return soon :)