Ambiente Hostel is a wee gem, it's in the heart of the local community, very friendly, helpful and super welcoming people.
Communal bathrooms are fine, simple, love the mosaic tiles. You can cook in the kitchen and keep some personal groceries in the fridges provided. It's surprisingly peaceful, ambient you might say.
If you like to walk, then Lisboa is a magical city to wonder through.
We highly recommend eating at Portugália.
Enjoy your stay.
Love Emma