If im traveling with a companion. Always tell them if we get split up and cant contact each other for one reason or another
1. consult your maps.me and head to the nearest post office.
2. If 2 or more post offices are similar distances go to the one on the alphabetically first street.
3. If they both start with the same letter go to the lowest numbered one.
4. If they are same number then go to the one in the lowest alphabetical geographic direction (n over s. Eeast Over west etc).
Hostels! They aren't really a place to go to recreationally, but I've met the most fascinating people at hostels by far. The environment fosters interaction anyway.