My friend and I stayed in the green room for a conference at ISCTE. The green actually looked nicer in person than it did in the pictures. The bnb was conveniently walking distance from the conference & it was easy to get into the city center using public transport. Our time there was very pleasant with the exception of some messy flatmates who seemed to never use their bathroom mats when they showered. The apartment was quite nice, comfortable, and clean but a strange smell from the kitchen/bathroom prevented us from hanging out in the living room :/