Recommendations for a hotel in Rio de Janeiro?

Hi Girls Looking into hotels for the honeymoon and will be spending 4/5 nights in Rio - hotels seem quite exp but I guess Im looking for a 4/5* hotel preferably with a pool in a good location so I expect to be paying a bit but would love some advice!! Also, if anyone has any recommendations for hotels in Buenos Aires (staying about 3 nights) that would be great!! V excited about the honeymoon!!! Thanks a mill

I would recommend ipanema beach in rio for accomodation. Slightly safer than copacobana. Fab city enjoy!!