Dumont's appartment was ideal for our needs. It is very conveniently situated near Copacabana beach and an easy walk to the metro and buses and the praca do Lido, where vans leave for Christ the redeemer. There are plenty of restaurents and supermarkets nearby.
We did not meet Dumont but checking in was easy at the reception desk and Dumont was very helpful by e mail and gave us good advice about where to go and getting to the airport. We would definitely stay there again.