We can definitely recommend staying at Danny's place. The location is perfect, right in the heart of Copacabana and only one block away from the beach. There are plenty of restaurants, bars, supermarkets and shops nearby and the area is safe also at night.
Danny was a caring host and helped us really quickly when we had an emergency.
The appartment is exactly as in the description and in the photos. Everything (shower, kitchen, air condition, ...) worked just fine.
When you are OK with the fact that the appartment doesn't have any windows, Danny's can be recommended 100%.