Diogo's place is great for large groups. The location is in a good, walkable area. It's about 3 blocks to Copacabana beach and 1 block to a metro station.
Diogo was helpful and had great communication. He was available to help with any questions or issues while we were his guests. The building is secure with a doorman and and outside gate. I would recommend this place to anyone coming with a big group of friends or family in Rio. I would stay here again.