Full disclosure I had to engage with AirBnb support to get out of my rental - I will leave this as unbiased as I can.
Location is pro and con - Next to the beach, but your bedroom window looks at the Favela (slums), thats how close you are. I felt uncomfortable in that neighborhood, they have 24/7 security (no key cards to get into gates) so when you need to enter the building you hope they are there. You are left waiting 2-5 minutes at times to get inside.
The shopping / stores around this area are not neighborhood vibes, its a lot of people wanting to get your wallet or cell phone. Police do have corners they will post up on to try and keep the neighborhood safe, once you are the beach its okay. Just be careful of whats in the drinks etc.
The bed was too small for me (they list the dimensions on the listing but I have never looked at that)
There is a code to enter the apartment - Security never even looks up from their phone when there. So anyone could get in that had the code, you cannot lock the door from the inside. (no safe either)
There were ants in the apartment which spread from the kitchen to bedroom (super small and itch) - I notified them as soon as I saw, they said they would try to get someone out there. I left before then.
Construction - I don't think the property managers ever visit the place, I asked ahead of time & explained I work from home, please let me know there is no construction. Neighbors across from me had it...
Internet speeds never went above 38MPS in the 3 days I was there, I brought it to their attention the same time as the ants, but like I said I was already trying to leave.
Bathroom, small / uncomfortable and they say you can't flush anything down the toilet, there is a waste bin next to the toilet, but no trash shoots that I could see.
Couch and tv were nice.
No special touches or attempt to make your stay comfortable, only the rule are the rules, you need to read them. All of them and if an inconvenience happens dont expect them to try to assist.
I would never stay in Copacabana again, nor any of the properties the Omar team manages.
There is a hostel with two restaurants and a couple of shops right in front of the building, there is also a community "playground" right in front, lots of loitering.