We loved our stay at Vulcano Blu. The staff is super friendly, the pool is amazing, and there is a shuttle that brings you to and from the ferry and to the center. The reception helps you get Vespas, excursions, boat trips etc - this is very practical and makes things easy. You need to walk a few minutes from the apartment to the pool. The apartment is simple but clean and has a nice terrace. The only draw back was that there was no Wi-Fi - not at the apartment or the pool/reception area. The staff tried to fix it though the first night and it was up for a few hours.