What would be the best way to go about finding clients for private lessons?
Easy and quite good way should be local editions of ads sites like gumtree, which looks like doesn't have Lublin section yet but there are similar like: lublin.olx.pl/about.php or electronic edition of newspapers or local ads sites - It took me about 5s to find something like this: lubliniak.pl
What is the going rate for private lessons? I would prefer to teach 1-4 people.
It depends If you are a native speaker, on your teaching experience etc. but I think 30-70PLN for 1h of 1:1 lessons and let's say 10-25PLN from each person If there was a group of 4 people.
Where would be a good location for lessons.
Your place or client's home. The first one should be a bit cheaper.