This place is one of my favourite secret spots in Lisbon. It is famous for its stunning formal gardens and 17th and 18th century decorative tiles with some of the country's finest, depicting hunting, battles, and religious scenes, statuary and fountains. So let's keep it as a secret between us.
In the very touristic Graça area, there is this heaven place, hidden from tourists. This café belongs to the theater da Garagem. It has an amazing view, the atmosphere is peaceful and with a lot of light. They don't have wifi if you plan to work there though..