We had a wonderful stay at casas do Olival. The apartment is perfectly situated in the middle of the best areas of Lisbon. I have to say it's a slight bit noisy but it's not like we were often at home so it doesn't really matter. The nights were calm. The apartment was perfect and very well furnished with a beautiful cute terrace at the back. And the hosts are very kind and always ready to help. If we go back to Lisbon we'll rent the same place again for sure!!