When visiting Lisbon, you must stay at Paulo's place. It is in absolutely perfect. Paulo is super responsive and the apartment is sparkling clean, spacious, and filled with thoughtful touches.
I loved that there was wine, cheese, and bread in the apartment, because I was very hungry traveller after arriving. I appreciate that there is plenty of room to store your own food and the kitchen is fully stocked. The washer and clothes line were super helpful (and there is detergent as well). If you travel with lots of toiletries, as I do, there is plenty of room in the bathroom for them, especially in the shower for bathing products. The shower also has a ledge, which is super helpful for shaving. These are things I don't always think about but always appreciate when I stay somewhere.
The only two things I can think of to note are be prepared to carry your luggage up a few flights of stairs (which I could easily do) and that if you leave the windows open at night, it is extremely noisy because it's a popular area. But once the windows and shutters are closed, you can't hear anything. And there's a fan in the bedroom and living room which is helpful at night time.