Hi,
My name is Max Decimer and I think I could be the perfect fit for your project.
You can find more information about my academic and professional background on my profile. I'm a Dutch national, but I've traveled to several of the destinations mentioned by you, including Kenya, South Africa and Serbia (3x). For one of my own projects I actually have a small office in Serbia, on the border with Hungary, and I'm planning to visit at least once before the end of september 2017.
I have been active as a freelance writer and translator for about 4 years now, and in that time I received and completed various assignments very similar to yours. As a matter of fact I'm working with several clients on a long-term basis right now, and often the work consists of creating blog posts on a variety of topics, including travel.
It's no problem for me to provide you with a short sample text of your choosing or with a sample of my previous work in order to give you a better idea of my level and style.
For this type of assignment I usually charge around $0.025 per word, but as a start I can agree with the fee you mentioned ($20 per 1'000 words).
If my profile is of interest to you than I'd be very interested in hearing more about your project, and if you have any questions please don't hesitate to contact me.
Kind regards,
Max Decimer