My wife and I stayed at the Conca d'Oro Hotel for one night in early December 2011. Our room was upgraded on arrival, and we had an amazing view of the coastline and ocean from our balcony. We could have sat there all day admiring the view, had it not been for all the rain. The staff were very friendly, and there was a large range of foods available for breakfast (the breakfast room also has a stunning view).
Parking at the nearby parking station was 20 euro per day, and we had to climb quite a few steps to reach the hotel. But I think both are fairly typical in Positano, so don't let that discourage you from going to this hotel. The hotel is situated on the western edge of the township, so it's a bit of a walk into the centre of Positano.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC