My friend and I rented our flat at the last minute and I have to say it's was a good value for money ! We specially enjoyed the rooftop perfect for breakfast and have a drink. As Lisboa warned us, because of the bars around the appartment is pretty noisy but it didn't annoyed us because we were out to have party most of the time :)
Bairro Alto is a very convivial place. It's impossible to bore there !