We reserved a family studio.
The room was very spacious and had a working air conditioning! We went in April and the two other hotels we went to before this one thought it was too early to allow AC.. so we had to open the windows and endure the noise in the street during the night. So, we were really happy when we saw that the AC was working at this hotel.
It is located in the heart of Belém, which was really nice.
They change the towels every 3 days and bedsheets once per week, but it was okay with us since we already change our bedsheets once per week at home and we care about the environment. Otherwise, the room is clean !
The only major downside is that they don't have an elevator so you have to climb a set of steep stairs with your suitcase (we had two 25kg suitcases, so it was a nightmare). They could at least put a ramp to roll our suitcases on.
Also, we arrived at 12pm at the hotel and the door was locked. We then learned there is no reception before 3pm and after 8pm. However, once you check in they give you a PIN Code and you can access the building at anytime.
The owner, Pedro, is the one at the reception. He is very nice and speak many languages! He was a bit intense/too much and talked a lot at first (our feet were in pain so we couldn't wait to reach our room) but was more discreet and respectful of our privacy in the next days.
You'll have to take the bus/metro if you want to go downtown Lisbon and it is generally crowded.
I would still go again !