Over the last year or so, I've stayed at about 10 or so AirBNBs. I was disappointed at most of them as they failed to take care of one of the most important features of an AirBNB - the details. Most AirBNBs are missing simple things - dish soap, cleaning supplies, salt, cooking equipment etc.
Suraya's place however, was perfect in this regard. Aside from the necessities, she even has a power adapter so you can plug in your non-Brazilian electronics! (Brazil has very unusual power outlets - make sure to bring a travel adapter unless you stay at Suraya's place). Everything I needed was simply there. Aside from food, I didn't really need to pick up anything at the shop.
Speaking of which - the area is full of restaurants, shops and a really good grocery store right next door. It's the perfect location if you're staying in Copacabana. It's too blocks from the beach, so it's a 5-min walk but even if you stay directly on Atlantic Avenue, there is a big street to cross so you really can't stay exactly "on" the beach.
The WiFi was quite fast. It did drop for maybe an hour twice during the whole month I was there, but nothing serious. The apartment itself, was quite cozy, you have everything you need for cooking except an oven (Ovens aren't really common in Brazil). The building staff was quite friendly even though I speak zero Portuguese (head's up - very few people in Brazil can speak English).
All in all, I don't think you'll find better value in Rio, than Suraya's place. Highly Recommended!