If you're in Lisbon, I recommend you try to stay with this beautiful family - they are fascinating, kind and special people. Milagros and Sebastião gave me a warm welcome into their home. They were very flexible and accommodating with me lounging around the apartment for most of the first two days while I battled a cold and insomnia. Only thing to be careful of is that the lock to the building is tricky to open - make sure to ask for a lesson, though maybe it will have been fixed by the time you stay. Fairly handy location that's quite close to main train stations and not too far from downtown. 10 mins walk from Alameda metro. The apartment's on the 3rd floor with no lift so be aware of that if you've got particularly heavy bags / mobility issues. Enjoy!