Where have I ended up now?

An hour ago I was on my couch watching tv

When all of a sudden I blink and open my eyes to a new world

I look around and see a big house and 12 cabins each differently colored

Then before I could even get my grasps on what's going on

This boy with blue eyes and blonde hair helps me up.

But before I can even ask

For a location the time or even his name

I blink and it all disappears again and I am transported once again

I open my eyes to a massive castle and kids flying around it on brooms

So starting from scratch I ask once again

Where have I ended up now?