This is going to be a long long trip

I had a flight canceled last night, due to strong winds and so the company compensated by sending us to a hotel, which was cool.
Now back to the airport, next day.

My flight to Athens leaves in 3h.
I'll then spend the whole night at the airport and overall 12h. I have checked but all the hotels around the airport are above my current budget and also I don't want to move all the way from the airport to the center just to sleep at a cheap hostel. Too much trouble and carrying my backpack around for medium comfort.
I hope I can find some corner to crash for the night at the airport.

Tomorrow noon I am taking a 4h flight to Doha, and then have a 9h layover there. I'm not planning on exiting the airport there.
My previous flight was transiting through Singapore but I had to reschedule the whole flight after yesterday's cancellation and that was the next affordable choice.

Finally on the 18th I'm flying to Denpasar, a 9h flight - I can sleep on the plane - and I'll be there in the afternoon...Bali...