Ok guys, I found three pretty detailed ratings on hostelworld for Greenwich.

"Once you figure out the train system it´s very easy to get to and from London. It takes about 15-20 but you do have to transfer. Greenwich is a really cool place, lots of small restaraunts and shops to visit. The actual hostel is nice, but there´s not much to it. It´s a good place. Hostellers get cheap food, which is a bonus!!"

"The hostel had a cool atmosphere, being above the pub. Cheap and convenient food and drinks. It was a little loud at night though, earplugs are recommended. Clean, average facilites. Good location right next to the Greenwich train station. Staff was helpful."

"Everything was very clean and nice. My fav. hostel in london so far. No security lockers though. Great bar downstairs."

That said, the train pass costs the same but the rooms are upstairs so it will be hotter. So we'd save about 35 dollars by staying in Greenwich at the sacrifice of the convenience and atmosphere of Camden. Do we think it's worth it? I know I really prefer Camden and it makes me sad to think that we wouldn't stay there, but at the same time, 35 dollars is a lot of money and I don't know how we could refuse saving that much seeing as that's like, five meals in london or two tours or a month of food in Romania. Anyway, let me know what you decide and then we can book tomorrow.

PS, we'll want the Central Zone 7 day pass for the tube. It's 39 dollars + tax and service fee. Although we MAY have to wait till we're in London to buy those because they might be activated the day you buy them. I don't know, the wording on the website is funny. Anyway, I'm not too worried about it, those will always be there and I'm really tired so I'm going to bed. Thanks so much for all the comments and thanks for the number crunching Marina, I owe you! Oh and on a more different note, Confusion reigns with the whole Dan thing because I thought I was firmly positioned in the 'friend zone' but we just spent the last 10 hours together and now I'm feeling some different vibes from him. That should be exciting except that I'm not really sure if I want to get into anything with him now, in fact I'm pretty sure that I don't. It'd be too complicated. So now I'm really, really, really confused and I've absolutely NO idea what to do. Ugh, August 23rd can't come soon enough.