Mr first international guide book about Istanbul is on the apple store and google play

https://www.favoroute.com/guide/2320/preview/istanbul-city-guide

for more information do not hesitate to contact me

Looking forward to hearing from you
Oguzhan APAK
The Lord of Istanbul Travel Planner

www.thelordofistanbultravelplanner.com

thelordofistanbultravelplanner@gmail.com
https://www.facebook.com/lordofistanbultravelplanner
http://lordofistanbultravelplanner.blogspot.com.tr/
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WhatsApp:00905336413242