PROS: Diogo and his sister are very friendly, sweet and open. They will make you feel at home. The place is sparkling clean. Bed is big and comfortable. Location is central (near train) and you can walk everywhere. Easy to find and get around. Near by a great restaurant: Metamorphosis (best vegan Lasagna I've ever had). Good communication.
CONS: it is not for light sleepers, noise sensitive visitors or people that go to bed early. It is right above a bar (Fri/Sat can get quite noisy as people talk right under the window) and next to the train station (trains run all night).
Somehow I have missed that part in the listing's description and ended up only staying one out of the 2 booked nights as the second was a Saturday... Diogo was very kind and offered a refund for it.
If you bring the silicone kind of earplugs you might be ok but you would still hear noises here and there.
In my experience: it is a great, convenient and clean stay for fun loving people that don't mind some noise and going to bed in the later hours...