It's a beautiful place with an incredible view. Spacious bathroom, well-equipped kitchen, comfortable beds, but the star is the large terrace with a full dining table and a pair of lounge chairs. The hosts gave us excellent directions so we could find our way (after dark) from the train station with no problem at all.
Couple of notes: We are four able-bodied adults, so the spiral staircase wasn't a problem (we left the large suitcase in the bedroom downstairs anyway). It could be an issue for people with less mobility, plus there are at least two sets of stairs (one pretty big) between the train station and the apartment. Also, Manarola closes fairly early. We were unable to find an open restaurant after 21:00, except for the excellent gelato place just below the piazza.