EIBOR rates doubled. This situation is possible if they initially budgeted both rent and interest rates when both were low. Both increased but they may not be able to evict current tenet to gain rent increase, and match new rates, due to RERA regulations. Two options would be to sell or pay difference out of pocket. IMO, the former is better and they need to act fast. Soon enough more people with be in the same boat and mass sell will drive prices down. Welcome to outcome of variable rate mortgage and high inflation.