I am now planning to go from Austria to the Balkans, but I haven't been to Hungary and Romania yet because I've heard a lot of unpleasant stories about these places. Personally, for me, destinations like Serbia and Bulgaria are much better for summer than Spain and Portugal. In Spain and Portugal, you can't make a living playing street music, and I've gone hungry many times. But in the Balkans, you don't. In Spain, you have to build terraces, there are a lot of strange people, and in Barcelona, all you have to do is turn around and you lose your backpack. Really Spain is worst place for me ever.
And aslo i'm backpacker and i will sleep anywhere in tent