HASDIL is nothing more than a money-laundering front for the owner's other questionable business, EduRefer. The latter is an organisation designed to "assist" hapless Turks in finding an ESL-course outside of Turkey for a whopping fee. As a result, it is the main focus of the owner's attention and the language school languishes .
The two teachers (who live above the school) are worked like slaves; if one teacher ups and leaves (as is frequently the case), the other poor soul is worked to death with regularly having to teach more than 45 hours a week and no overtime or other compensation received, although promises of same abound and are never fulfilled.
The owner of the school is a consummate prevaricator whose real goal in life is to fleece students for as much as he can while maximizing his margins through mistreatment of employees and failure to provide promised services to students and staff alike. He promises prospective teachers an above-average wage with free room and board, starts them with a very light load and after a month or two, slams them with more hours than is normal even in Turkey. Students are not told they will have to pay extra for text materials until after they have committed and paid, and once they find out that there will be additional charges for text materials, they frequently balk. If they cannot be pressured into buying the text from the school at an inflated price, they are subjected to the owner's wrath and belittled and humiliated wherever possible.
Behind their backs, this odious little man speaks ill of his clients and his staff, lies about his local and international connections and spends much of his time taking free jaunts in other countries trying to flog his student referral services. When he is away, the school actually functions fairly smoothly, although constant upsets due to bad book orders and other administrative cock-ups frequently sour the atmosphere.
Teachers who apply are often attracted by the school's claims to be British Council accredited; that accreditation once was obtained through liaisons with another school in Britain, but when those ties were broken the supposed accreditation remained on all of HASDIL's advertisements and websites. Those applying are routinely promised working papers and full visas, which more often than not do not ever come into being; one teacher recently was arrested at Istanbul airport as he had no visa whatsoever despite assurances from the liar-owner that all these matters has been or were in the process of being taken care of.
While the teaching is of good quality as those hired generally have very good skill levels and are genuine native speakers, the severe exploitation of teaching staff at the hands of the money-good life for himself-oriented owner frequently results in a revolving door for staff. After teachers do choose to leave these less than tenable circumstances, their reputations among students are (of course) blackened, as management is incapable of introspection and analysis of where they fail.
In summary, this place is to be avoided at all costs unless you are masochistic.