Great for a short stay.
Ricardo's apartment is in a good location - couple blocks from Copacabana beach, easy walk to Ipanema and about 10 mins to a Metro station to get you around the city. The complex feels secure, although in Rio be aware of your surroundings at all times. There's still a lot of homeless and beggers in the main districts.
It's a modern, clean apartment. The kitchen is well equipped (stove top, oven, microwave, fridge) but you will need to buy some basics like cooking oil and laundry detergent. Ricardo supplied salt, sugar, coffee.
Ricardo was direct and communicative. Building staff friendly. Building can be a little noisy - loud in the stairwells and you can hear all the aircon units running.
Overall we would recommend the apartment for a stay in Copacabana. We stayed 5 nights.