Beyoğlu belediye kütüphanesi on galip dede caddesi has free wifi, clean bathrooms, and blessed air conditioning - perfect escape when youre burnt out from walking istanbul's hills. Three floors of study space and they actually have english novels on the second floor

You don't need a library card to camp out in the reading areas. Great backup plan when a summer rainstorm hits or your phone dies and you need to plan your next moves. Some floors even have free turkish language learning materials if you want to decode menu turkish beyond kebab and döner