Original sentence: (It is served by a  road leaving from the İstanbul-Ankara motorway   or the highway  at the level of Mount Bolu, three hours' drive from these two largest cities of Turkey).It is a vacation and excursion spot for both Turkish and foreign travellers due to the natural environment, forests, and accessibility by car
Edited sentence: It is a favorite vacation and excursion spot for both Turkish and foreign travellers thanks to the natural beauty of its surroundings, which are covered with dense forests, and easy access by car (it is served by a  road leaving from the İstanbul-Ankara motorway   or the highway  at the level of Mount Bolu, three hours' drive from these two largest cities of Turkey)