Actually the flat is managed by an agency. Service was very good.
The flat was perfect for family trip since it has 3 bedrooms and 2 bathrooms. This was as nice as the pictures, very centrally located , between Alfama and Baixa/Chiado, which are the main neighborhoods to visit in the city. Only negative point is that you cannot really open the windows during the night if you are a light sleeper, since this is quite noisy in the street. But once windows are closed it is quiet, and each bedroom got a fan to keep yourself fresh.
The real plus being the agency smartphone you can take during your trip to get maps and internet access for free! Clever idea!