Did I hang the feeder too high?

Hello, I am very new to the whole birdwatching/feeding thing, so forgive me if the question is really basic, but I have recently bought a feeder and hanged it on my balcony (I live in the flat), it looks like this:

The height is about 2.3m (7.5 ft).

It's been about a week, but no bird has come to visit, although there are quite a lot of birds in the area. Is this normal or am I positioned my feeder too high?

Thanks, Max