There is one guy who has a goggle account as a guide in Rio de janeiro. He's gay, speaks English, and received some negative reviews a few years back. I think he's improved based on some comments I read somewhere a few months back. His name is Marcelo and is NOT to be confused with the stellar guide in Buenos Aires. Do a google check and write to him citing your specific needs and wants and desires. This young man served as a guide for a good acquaintance of mine some years back and was a dud then, but again, I think his services have apparently changed.
Danilo is based in Sao Paulo and continues to serve as a guide. He's on my FB page and writes daily. Last summer he guided two friends of mine and received high marks from them. In the mid 2000s he guided my friend in both Sao Paulo and Rio. If you desire his flying to Rio and meeting you as a guide for culture only, he'll do that. He has apparently divorced himself from taking guys to saunas from what my friends revealed to me, for today he is involved in high end guiding for the cultural components of a country, town, city, etc. He was in Turkey last year and posted on FB regarding this trip.