Sign all contract’s pages. It is recommended that each contract page, both sides and copies be signed so that no one changes it afterward. Check the apartment’s condition, and after you do, you should sign the agreement: the guarantee you pay at the beginning can be used only if you break something, not if something was already broken. You do not want to be accused of spoiling something already in terrible condition. Therefore, thoroughly checking the houses for rent before you sign anything is better.