Ah that's a problem indeed if he cannot speak well English but there are many many others that don't either. Unfortunately i don't speak a word hungarian nor russian which he might understand better. I know that some Hungarians write a lot in russian boards.
The next point we must be aware of is that in some places you cannot get internet flatrates yet and it's too hard to get in contact with such people. I am sure in Hungary this problem does not exist in towns.
The heat is a major problem not only for DXing but for all kind of work. I know what you mean since having spent lots of hot summers in Greece. Dry heat is no problem at all. 48C in Larisa (the next beach is 40km away) with 10% rel. humidity are more pleasant than rainy tropical 30C without any wind. In Southern Corfu we have very hot days and if not windy dense fog in the morning time in cypress and olive woods. And at night time mosquitos that don't let you sleep at least 3 hours. The solution is - as you said - spending day and night if possible in the sea. "Lazyness" in southern countries is not only a lifestyle but a must if you wanna survive. And aircondition is not always a solution for those who don't know. The quick and often changes of cool/dry (inside) and hot/humid (outside) can make you sick even if the filters are beeing cleaned regularly. But working without is almost impossible. Here in Southern Germany aircondition was almost unknown 20 years ago but after some longlasting hot summers they are getting more and more but not in flats. At least you have the sea there and much more wind. This is the best aircondition.
P.S.: Right now we only have 26C/40% rel.hum. but it feels worse than 35C besides a windy beach. I think should take the plane and dive into the icy deep waters of the Ionian Sea.