To be a Landlord you need to go in with your eyes wide open.
I became an accidental Landlord at the age of 20, and ran a house as a profit making commune.
I learnt a lot of things: How to repair stuff, basic plumbing, basic electrics, DIY, painting and decorating, how houses are built, and where to get help, all for free as we had a budget of close to zero.
It also taught me about who pays and who does not
In 40 years of being a landlord I've only ever had to take a tenant to court once, and I've had maybe three more who have had issues with payments.
There are quite a few deposits I've not returned, or only partially returned due to either damage or cleaning issues.
But overall the vast majority of my tenants have been lovely people, I have one tenant who has been renting the property since 1997 and another couple that stayed a decade and I have quite a few tenants that have come back a few years later, including one that came back three times (each time with a different wife).
The thing that I'm a stickler for in the tenancy check.
It is done by the Agent and costs me about £60 a time
They check background, they check salary, going back months, to ensure you can afford it, they also go through your utilities bills, they check your current landlord and the one before that, they check your employer, they triple check ID, they look for CCJ's not just for the tenant, but also people they may have been in the same address, they check the credit worthiness of the previous places you have lived. I even get a very detailed report of the general income and social mobility of the immediate area around where they live.
In other words, if you appeared at the Agents office and gave a previous address of an estate in Roumania (or the UK) where there was 80% unemployment, it would raise a load of questions.
Doing these sort of check across borders is no longer a problem.
If any prospective tenant obstructs the questions or is not prepared to answer the questions (we have only ever had English people who did that) then it's simple, the Agent wont touch them, and the local Agents all talk to each other.
Most of the tenants we take are Eastern Europeans (we love them, they keep everything so clean ! and repair stuff without calling us out for a leaking tap)