The location is unbeatbable: it has great transport links via Cais do Sodre station which is less than a minute walk and is relatively central amongst the popular sights and neighbourhoods in Lisbon, making most attractions within walking distance. The apartment is nice and clean, making for a pleasant stay. The only draw back is the noise, as there are a couple of bars on the street that the bedroom window overlooks, which are open until the early hours. Although the apartment is on the 4th floor, it's still pretty loud. If you're a light sleeper, I'd recommend you nring ear plugs!