I went there in September 2013. I found a weekend gateaway package (I know, I know. My life actually consisted of weekend getaways back then) for a very cheap price, I think it was IDR 285k per person or something. Harapan Island is located about 4 hours by boat from Muara Angke harbor. It is definitely farther away off shore Jakarta than Tidung. I went there with friends. We went to many islands around Harapan: Dolphin, Gusung, Perak, Bulat, Macan, and also Matahari Island. We tried out local street food at night in the nearby food center, too. We had delicious grilled corns and squids. It was a lot of fun! I didn’t take that many pictures because I was busy swimming and snorkeling. My skin got so tanned after I got back (Yeah, I didn’t think I could get more tanned either. But, I did. Not necessarily a bad thing, though. I think tanned skin is sexy). The photos are a bit hazy but oh well!