Jorge&Sarah have been very kind and helpful. They gave us a lot of instructions about visiting some places, monuments and advices about restaurants. Nidus is a very clean and nice flat with a view on the roofs of Alfama and Tagus river. It is in a very central position, less than 15 minutes from Praça do Comercio, 7 minutes from the Cathedral, 5 from Miradouro de Santa Luzia, and near to many typical restaurants. Recommended for couple.