Im really sorry Angelfish2, I only just saw your post! So am a bit late!!! I guess I missed it.
But for anyone else reading this later, I would say that I have traveled to Jakarta a few times with work and Ive been out to 1000 islands twice, because for me any day diving is a good day! I just like being underwater.
To be honest, I did a few really nice dives there - not brilliant dives, but colorful one with some nice drifts. Plenty of beautiful sponges, crown of thorns, turtles, box fish etc. I did also do some less interesting dives there. I had a few good decent dive masters and two completely useless ones who could hardly dive.
I stayed on Kotok one time and Putri another time. I think Kotok was better if I remember right. However, the trip was from Sat morning til Sunday afternoon, as it is quite a boat ride out there. You can't really do it in a day. It was pretty expensive as well, considering you are not staying in a luxury place, it does have luxury prices.
For me, it was a nice way to add something I love to a business trip, so it was worthwhile. Better than wandering around malls and the like. But I can imagine if you live in Jakarta then you just wouldn't bother, as there are so many better places to dive.
If I go again, Id love to do the Krakatoa trip. In fact, I had booked it one time but it got cancelled… so its still on my list. Apparently that happens quite often.