Add punctuation: Cheap apartments for rent in Rab up to 13 persons Magnificient sea view 50 meters from the center of town
A: Cheap apartments for rent in Rab, up to 13 persons. Magnificient sea view, 50 meters from the center of town.

Add punctuation: Only proposals put forward by the Board of directors or the members of the Board of Directors no later than posted by 15 March may be decided at the AGM Decisions are taken by ordinary majority vote among the members in attendance
A: Only proposals put forward by the Board of directors or the members of the Board of Directors no later than posted by 15. March may be decided at the AGM. Decisions are taken by ordinary majority vote among the members in attendance.

Add punctuation: Loan signs are sometimes used for emphasis like the loan sign YES substituted for the sign YES but sometimes represent the only form of the sign eg NO
A:
Loan signs are sometimes used for emphasis (like the loan sign #YES substituted for the sign YES), but sometimes represent the only form of the sign (e.g., #NO).