Finding an apartment is a tedious process. I hate it.
One of the things I gave a lot of thoughts to is the message I send to landlords to get a viewing. I used to write quite lengthy messages until Khaled Kandil gave me the following one.
My name is Mostafa Naguib, working as a Product Manager for GoEuro in Berlin.
Would you please tell me when can I visit the apartment for viewing?
Looking forward to hear from you.
The message above I would say converts very well. At least in Germany. Feel free to use it. You are welcome.