Moudir,

For answer no. 3 I meant that the landlords don't want to rent in low rate cause the next year they wont be able to increase more then 10%.
For example if he rent a villa for 7000 as he can't rent it for more like all the other landlords where they already rented their villas for 10000 so if next year the market will stay the same so he can't increase it more than 7700 as the law says, thats why they refuse to rent less than the market now even if the demand is low.

Ayman