What's a good price for your standards? I suggest you stay at a youth hostel. I don't know about prices, but they might be in the $50 renage, I guess, which I consider a reasonable price.
Pros:
It might be one of the best prices.
You will get to know some people who you can hang out with if you want to have some fun.
Cons:
You might not get the view you want, but I bet you could find some in downtown Tokyo, so you could just go out at night and watch the scenery.
They might have some a curfew, which would suck.
Hey, I see there are more negative things than positive from hostels, but the price is by faaaaaaaaar the most important thing for me (I don't know about you)
Mauricio