Urca is very unique and nice. A change of pace from the rest of Rio. Relaxed and neighborhood-type feel. The buses will take you to the metro or other key parts of Rio so it is easy to get back into the main areas. But given its nature, it could be missing some items you are looking for.
The apartment is small but that is clear upfront. The host is nice and communicative. Having the mountain be the wall of the shower is interesting. Good wifi. Only negative was that it was pricey for what I got. But I am here during Carnaval so some premium could have been expected.