I stayed 4 nights at Copamar hotel. The staff is adorable. Smiling, willing to help, very customer friendly. Simply fantastic. Especially when I compare this to the usual customer service you get in Rio which do not impress me much.
The room are basic but they are of good size. I did certainly not found the bed comfortable. Not that it was too hard. My own bed is very hard. But that bed was cheap. The material made me feel very warm and not comfortable at all despite the air conditioning system turned on (full power).
I had a room without view but - apart from the air conditioning - it was very quiet. No noise from the streets nor from any neighbors :)
I never had to order the breakfast the day before. I simply asked for it and it would be delivered in the room within 5 to 10 minutes. Always pretty much the same items. 3 fruits, various types of breads, 2 pieces of ham, some cheese, butter, marmelade and good coffee and milk.
For the price paid and the location, literally 4 minutes away from the beach of Copacabana, in a lively part, it is certainly a good value. The fantastic staff, so friendly, is a great plus!
I would definitely consider the Copamar should I return to this area of Rio.