Milagros' place is a cute flat with lots of sunlight and a good view of the northern part of the city. It's easy to walk to the metro and not too long to make your way down towards the water, Rua de Prata, Praça do Comerció, etc.
her family are very sweet and show the utmost hospitality! I loved my stay with them and would highly recommend spending a little time with them during your Lisboa visit