Definitely the best hostel I've ever been!
The owners are extremely friendly and cheerful which is important when travelling abroad!!
Also, the common area is even more beautiful and spacious than it looks in the pictures and the room was very clean and new with personal light, plug and USB ports right next to my bed.
It's literally located 1-2 minutes away from Praça do Comércio and it's also surrounded by shops and restaurants.