Most of the Facebook groups are private, so you may need to ask the coordinator of the group to add you in. Also, most of the advertisements are in Czech, so you may need help from your buddy, however, people usually respond to English messages as well.
If somebody offers you accommodation on Facebook, make sure that you don’t miss any warning signs that would suggest that the person may be a scammer. The warning signs might be:
The person has only one photo on their profile, and the photo looks like it was downloaded from the internet.
The person has old photos on their profile.
Their Facebook profile doesn’t have any history, or it was created just recently.
The person doesn’t have any friends on their profile, etc.
For more tips on how to recognize a scammer, see the tab Recommendation. Here are some Facebook groups where you can look for private accommodations:
Even if the dorm reservation system shows that all rooms are already booked, you can try your luck and email firstname.lastname@example.org approximately two weeks after the start of the semester to ask if a room has been made available.
If you decide to rent a flat independently, make sure not to become a victim of scammers. Some warning signs can be:
The landlord doesn’t want to meet in person
They want you to rent the flat without seeing it, or at least giving you a virtual tour
They don’t give you a phone number or the number does not work
They ask for a security deposit before signing the lease
If there is a lease agreement, it is full of grammatical and puctuation errors, or has some suspiciously looking stamps
The landlord is not able to give you information on the flat location and services in the surroundings
The price is suspiciously good
The landlord does not ask any questions about you (your job, reasons for living in the Czech Republic, …)