Maria is an incredibly helpful host and very responsive to her guests. The apartment is clean and well maintained, exactly as it can be seen in the pictures.
However, it is important to mention that there is constant noise pervading the apartment during the day, starting from 7 a.m. This is due to Rua Barata Ribeiro, which is the biggest and most trafficated road in Copacabana. I am not able to sleep through noise, so I was very careful in reading the reviews before booking this apartment. I ready almost 50, and everyone who mentioned the noise quickly glossed over it or said it was only in the living room. I cannot confirm that, and I think it is important for perspective guests to know that neither I nor my friend in the other room managed to get proper sleep in any of our four nights here, despite using top quality earplugs...
All that said, you might be an early riser and OK with adjusting to the timing of the road traffic, in which case the noise wouldn't be a problem for you, and we'd recommend it.