We felt like home during the 17 days at Joana's apartment. It's very well equiped and comfortable. The view to the river and the famous "Lisbon light" are very nice. Unfortunately we couldn't meet her, but her sister was very helpful and nice everytime we needed her, and received us with fruits and wine.
The location is very tipical, in a nice neighborhood. Transport is easy to reach, but you may have to walk 5-10 minutes. Some taxis refused to leave us at the door because the streets in Madragoa are a bit narrow (it wasn't a problem because there are streets very close where they can leave you, just be sure to ask before going with your bags).
We would definetely go back.