Cannot fault anything following our stay at Joao's lovely flat. In terms of location, I don't believe you can be any closer from the city centre. It is also really easy to reach any other place in Lisbon. The flat was super clean, the little patio really enjoyable, everything was perfect. Communication with Joao was great, he made everything so we could feel "at home" so I would definitely recommend this flat to anyone visiting Lisbon.