Hugo was a great host, very helpful and accommodating- even helping me book a taxi for my morning flight.
The bedroom was very spacious and clean and the location of the flat was great- just a short walk to many bars, restaurants and tourist locations. The Camoes square nearby has a lot of nice and cheap breakfast options as well as the Baixa-Chiado metro stop.
Keep in mind that if you have heavy luggage, the flat is on the second floor and there is no elevator and the Bairro Alto in general has quite a few steep and cobbled streets.