Arno & Igor are great hosts. They are very responsive via WhatsApp and will make sure you enjoy your stay by answering any question you might have. The apartment is cute and even has a closed bedroom (rarity in Copacabana), so it can host non-couples as well as couples. Key safe makes checking in and checking out super simple. Thanks Arno!
Note: make sure to inquire about how to get a hot shower. It's not as simple as it looks!