Alfama - one of the oldest and most typical urban districts of Lisboa (and my favorite too)
Corners of Lisboa - near Castelo de São Jorge
Views of Lisboa - Castelo de São Jorge
Sintra - Palácio Nacional da Pena
Lost Lisbon, Cais House - Guesthouse in Caix Sodré
Further favorites of mine:
Restaurants
TO.B, Baixa Chiado
Restaurante 100 Maneiras, Bairro Alto
Stay
Alma Moura, Alfama Residences
Casa das Janelas com Vista, Bairro Alto Bed and Breakfast
Do
Pick-nick at Castelo de São Jorge
A Vida Portuguesa, best shop for Portuguese souvenirs
Club de Fado, restaurant with live Fado music
Visit
Lisboa by foot, no map, just follow your heart
Sintra, beautiful castles and nature on the hills of Sintra.
Oceanario de Lisbon, specially if you have children