We absolutely loved staying in Halina & Andres´ apartment!
All in all, we stayed for one week.
What is so superb: the location in the middle of trendy Principe Real, the absolutely comfy bed (beware: it is only 1,40 m wide but the matress is so good, that you don´t feel a heavier person laying in bed next to you - and my partner is nearly twice my weight), the stylish fridge, the fact that it has a washing machine AND a dryer, a Nespresso coffee machine, enough closet space for 2 people with 2 big suitcases, the quietness of a side street, the cleanliness, the fact that it has a beautifully working heating as it can get very cold in Lisbon in winter and houses are not really well isolated / prepared for the cold, AND AND AND.
The only small invonvenience is one missing shower door which lead to the fact that bathroom door get pretty wet after each shower - but Halina & Andre are getting this fixed already.
We would definitely stay in this apartment again and can recommend it to everyone warmly.