Perfect. What more can I say? It's a hostel and it's not claiming to be anything more.
Super clean, easy to find, very good location, close to a big station.
I booked the private room which was 4 bunk beds to myself, I spent about 2 hours awake in the place as I was exploring Lisbon the entire time.
It has a little kitchen, fridge etc.
Quite a steep staircase, so if you're a little immobile it might be a bit tricky for you, but, the entire city is steep so..