I’ve been renting property out for over 25 year and had very few problems.
Some tenants do believe though that you are there to do everything for them,including one tenant who phoned me when a light bulb went.
Now i have everything in writing as to who is responsible for what so everyone knows where they stand.I would never take a tenant on “cash in the hand,stay as long as you want mate”.
One property has just cost me 10k to make lettable due to the actions of the previous tenant.My solicitor said its not worth taking action as you’ll never recover the money.
Its pretty simple really.If the property is badly maintained,rundown,with no type of agreement available,leave it alone.