You’ll find beautiful and typical buildings around Rua das Chagas, da Emenda, Ivens, Garrett, largos de S.Carlos, or das Belas Artes.
Sqm price are high maybe similar to others European capitals, it is in fact the most expensive of Lisbon, along with Avenida da Liberdade. It is a very good investment essentially for businesses related to hotels due to the tourism demand.
Prices skyrocketed those last years, but it’s possible that they will stagnate over the next few years. New interesting neighborhoods are being reclassified and due to the shortage in Chiado, interests are starting to travel through other areas of Lisbon.