Can't say enough good things about the Travellers House. Day tour to Sintra was fantastic, excellent rooms, great staff...there's a reason this is known as the best hostel worldwide.
Very clean facility with friendly, helpful staff. Fantastic location - we walked everywhere. Walking tour from the hostel was great. Make sure you ask for clean towels in the morning if you want them as the hostel does not provide them otherwise.
Welcoming and helpful staff, great breakfast, and clean rooms. Bathrooms were cleaned daily. We had to drop our key at the desk every time we went out and they never checked who was picking the key up when we came back, which seemed somewhat risky, but we never had a problem.
Extremely clean (bathrooms cleaned every day), very friendly and accommodating staff, great breakfast, and convenient location. Gave us breakfast on the morning of arrival and prepared our room early (9am). Would stay here again.