Who Said Complaining Doesn't Work?

I don't like to complain and I often tell my wife it won't help. But after spending a night in a hotel two days ago with a non functioning aircon i started getting a little irritated. It's only about a hundred degrees here, and I'm Swedish, wish is like putting a polar bear in the Sahara Desert. But this time I chose not to complain, and I somehow managed to still get a few hours of shut eye.
So yesterday I arrive to another hotelwith a more optimistic outlook and in the evening I was really looking forward to cool down in the room. This is the same hotel I stayed in in the beginning of the vacation so I was happy with the service and it made me come back. But of course this time the air con doesn't work here either. Alright, this time I'm not gonna take it. So I call the reception, and very nicely but still irritated I tell them they need to fix this situation.
" sir, we don't have any other standard rooms left, so we will upgrade you to the pent house" ! Bingo I say to myself complaining does work. Haha
This is the first floor :

I mean we are not talking crazy luxury here, but for me it's really awesome.

The view of the balcony is really something, what do you think ?

It has a staircase up to the loft where the bedroom is.

The bedroom is very cozy and has a high ceiling with a cozy chandelier.

The bath is right next to the bedroom so it's quite romantic.

It feels like an eagles nest up here, and there is a little balcony up here as well.

Once again I don't like to complain, but if you paid for something you should get what you asked for, in this case I got a bit more :) Have you had any experience where complaining pays off or when you have had the luck to be upgraded during vacation ?