Hi -- I just returned from Positano last week it was amazing. I am jealous of you! We stayed at the Villa Rosa -- great location, very clean, friendly staff, water views and a balcony with breakfast delivered to the room every morning. We paid about $200 / night. I know that is more than you want to pay but it is very expensive there and I can say that I did A LOT of research and the Villa Rosa was an excellent value. It is pretty popular though so call soon if you are interested!