We stayed at Sofia's apartment in Principe Real for 2 weeks, as we wanted to explore all of Lisbon and the surrounding area at a relaxed pace. The apartment was ideal, comfortable, clean, nicely decorated with all the amenities you could possibly want. The location was great too, very convenient for Bairro Alto, Chiado and Alfama. Nice balcony from which you can relax in the evenings. Overall, excellent value for money.