A woman who has been retaining deposits and subletting properties without permission has had almost €40,000 in rent arrears orders issued against her.
Susi Medeiros, otherwise known as 'Miss Firmo', has been described as a "serial offender" in the Irish rental market.
Previously it was revealed Miss Firmo has been imposing a list of 108 "crazy" rules on vulnerable students and foreigners she has been renting accommodation to.
When the Herald visited the property in Cabra where she is currently living, she refused to answer the door or further calls.
A number of orders have been issued against Ms Medeiros by the Residential Tenancies Board. A source familiar with her case described her as a "serial offender".
In November 2014, an order was made for her to pay rent arrears in the sum of €33,484.62.
In 2010, she was ordered to pay €2,995 to the landlord of a property she was renting and in May this year she was served a Notice of Termination for the property she currently lives in.
At present, she is charging six lodgers €300 per month plus €80 in bills - all paid in cash. This is despite the termination order giving her 28 days to vacate the property. Ms Medeiros also collects a €350 deposit and refuses to return it.
In the Determination Order, she is ordered to pay €1,350 in rent per month, meaning she is currently making a profit from subletting the property without permission.
On the issue of the 108 rules given to tenants, an RTB spokesperson said: "The Residential Tenancies Board is the State body set up to resolve disputes between landlords and tenants (among other functions), and therefore cannot offer advice to either party in particular situations, or review a lease to check its compliance with the legislation, since such a case could come before the Board for adjudication and any such comment could prejudice the Board's independence.
"The RTB strongly recommends tenants who have legitimate grievances with their landlords to contact the RTB for helpful information on their rights, and they can also consider submitting a dispute to the Board for adjudication."
Tenants claim they are not allowed to use the central heating for more than two hours a day. Cristina Corbalan Salazar, a Spanish lawyer who had recently been living in the property, said she had to go to hospital with a lung infection due to the damp and mouldy living conditions.
"Mould is all over the walls and stairs. I thought this is how things were in Ireland."
The property owner will not be offering a comment until the issue has been resolved.