Helio's place provided a great stay in Rio. The view from the balcony is spectacular. We enjoyed breakfast and evening drinks watching the ever-changing activity on the lagoa.
A few steps from the apt gets you to a small gas station grocery where you can purchase water and other necessities. It is an easy (less than 10 min) walk to a couple of good restaurants and Santa Marta Padaria for take out or sit down breakfast or lunch is available. A few steps further around the lagoa takes you to Gavea, a great location for restaurants and nightlife.
The apartment is very clean, and probably the best furnished and equipped full apt stay I've experienced on Air BnB. The mattresses are good but quite firm, and the linens are good quality.
Helio was very responsive to the few concerns we had both before we arrived in Rio and during our stay.
The doormen were all friendly and helpful, including one fellow with very good English which got us untangled a time or two when my limited Portuguese was an issue.
This is definitely a place I would recommend to friends and check out when I return.