On arrival thermostat was at 84 even though set at 73. Followed owner's suggestion of closing some vents in main bedroom. An hour later, it was 86-87 degrees. Owner told us to reopen bedroom vents and wait another hour since it was a hot day. After another hour, had difficulty reaching owner. Texted, VRBO messaged, and left a vm. Finally heard back that she was sending her cleaning lady. Cleaning lady adjusted back room's manual a/c to high, put main thermostat to 68. Said it was hottest it had ever been inside earlier when cleaning so she closed blinds. In a.m. it was 75 and rising. Closed bedroom vents again while waiting an hour for owner to respond. Condensation formed on vents and dripped everywhere so reopened vents. Owner finally said she was contacting a/c guy. We told her we couldn't wait around losing another day of our vacation. We hoped she would reimburse us for the remaining time. Later that day she texted that a/c guy found two ceiling vents open in kitchen/bathroom and bedroom vents were all open contributing to hot living area. I told her we had never stayed in an RV and never touched those nor knew we should. Neither cleaning lady nor owner said anything about them either. Reminded her that when we closed bedroom vents that morning, condensation dripped everywhere so we had to reopen them. She never responded. Disappointed that owner did not reimburse for partial stay after a/c and communication issues. Would not recommend to novice RV renters.