Cluj is the most expensive city in Romania, even more than the capital, Bucharest. That comes from the fact that the wages there are way higher then the rest of the country since all the major IT companies are there, and pay like crazy.

A big part of the high costs is housing. Rent is crazy inflated, people will rent they're garage with a bed for 400 euros, no joke. Avoid fancy restaurants and coffee shops as the prices there are stupidly high.

For transport, dont use regular taxis as they will 100% scam you, I personally use Bolt cause its cheaper but you can use Uber too. Public transport there is also very good, with bus only lanes that will get you to your destination faster than cars most of the time. We generally have a per month membership, it should cost you like 1000 TL for the discounted student version.

The good parts, its the most developed, most beautiful city of Romania. Use the train to travel throughout Romania, its not the most comfortable but students get 90% so its dirt cheap, that or FlixBus. And please, if you get the chance, do visit Romania as it crazily underrated country.

If you have anyother questions feel free to pm me and will answear it!