I have spent two nights in Richard's apartment, everything was absolutely perfect!
I've booked with almost no advance, but Richard was always responsive and available. Everything was set up in advance and I was amazed to find juice and beers in the fridge and maps and tips to visit the city on the table.
The apartment is beautiful, tidy and cozy, located in one of the best neighborhoods in Rio and close to everything. Plus, Leblon beach is just a few blocks away.
Five stars and highly recommended, I would definitely come back there.