I have had some moisture issues in that unit since then, but it didn’t seem to effect the walls.

Moisture resistant drywall will be used in all wet locationsAll ceramic tile will be installed on 1/2" cement board or a concrete PaintNew Switches, Receptacles, GFCIs and cover plates to codeHardwired smoke detectorsCarbon Monoxide DetectorsBathroom: Install Ceramic tile on walls for tub and floorInstall new pre-hung 6 panel hollow core doorNew Toilet with ring and supplyNew Vanity with faucet, drain and supply linesInstall new light fixtureInstall bath exhaust fanNew medicine cabinetInstall New TubBathroom Accessories (Toilet paper holder, towel bars, etc.)Bedrooms / Living room:Install new pre-hung doorInstall all trim ( Door Casing, Base, Shoe)Install Flooring material (Carpet, Hardwood,Laminate )Install New Light fixtureInstall Closet door (Type to be decided)Kitchen:    Install Ceramic floorInstall New kitchen cabinetsInstall Counter top (Granite/Corian/Laminate)Install New Undermount sink and faucet Install Ceramic backsplash with accentInstall Light fixturesInstall garbage disposal (if applicable)Install Dishwasher (If applicable)Install all trimInstall pre-hung pantry door (If applicable)All material types will be selected by you and installed by us.

Andy Yates Just a gentle reminder, you can't advertise your own self or company here in BP.

To all of you Gentle Gentile out there, have a very Merry Christmas, you and your families.

Flushing refrigerant lines per manufacturers recommendations, pressure test and vacuum all lines to prevent leaks and moisture.

Easy to install, easy to repair/replace and no issues with water or moisture.

.- REMOVE CARPET MATERIAL ON BASEMENT FLOOR AND UP STAIRS- REMOVE BASEBOARD; DOOR CASINGS AND INTERIOR DOORS- REMOVE SHEETROCK UP TO 84” HEIGHT OFF OF FLOOR- REMOVE WALL TILE AND SHEETROCK SUBSTRATE IN BATHROOM – SAVE TUB/SHOWER FAUCET & TRIMS- REMOVE BATHROOM VANITY – SAVE FAUCET- SAVE TOILET, TUB AND TUB GLASS DOOR- LEAVE HVAC AND HOT WATER HEATER IN PLACE FOR INSPECTION- LEAVE ALL ELECTRIC IN PLACE FOR INSPECTION- LEAVE FRAMING IN PLACE FOR INSPECTION- REMOVE INSULATION ON OUTSIDE WALLS- NO CEILING WORK- REMOVE STAIR TRIM THAT WAS UNDER WATER – LEAVE TREADS AND RISERS IN PLACE.3.DEHUMIDIFYING AND DRYING AFTER WATER DAMAGE REMOVALS ABOVE:- PLACE POWERFUL DEHUMIDIFIER TO REMOVE THE ADDED MOISTURE THAT REMAINS IN THE BASEMENT AIR.- PLACE INDUSTRIAL AIR MOVERS THAT MOVE A TREMENDOUS AMOUNT OF AIR TO SPEED THE DRYING PROCESS.4.SANITIZING AND ODOR REMOVAL (IF ANY) ARE NOT INCLUDED HERE AND WILLBE PART OF THE RESTORATION PROCESS.5.JOBSITE AREA WILL BE COMPLETELY CLEANED UP AND ALL DEBRIS REMOVEDOFF SITE.6.EMERGENCY BOARD UP SERVICE ON 7/23/11 TO PROTECT PROPERTY.7.SEND DIGITAL IMAGES OF COMPLETED WORK.CONTRACT PRICE BELOW REPRESENTS $3000.00 FOR THE DEMO WORK AND $200.00 FOR THE EMERGENCY BOARD UP.CONTRACT PRICE:$3,200.00PAYABLE AS FOLLOWS:$ 3,200.00- UPON SUBSTANTIAL COMPLETION; TO BE WIRED ON 7/25/11

Since then, I've had the dry walls removed and left heaters/dehumidifiers running around the clock absorbing every bit of moisture.

@John Ching 's note is spot on about gently telling them that you realize this unit may be more than they can afford on one salary, and offer to let them out of the lease early, as long as they allow you to show the unit until they do.

It is likely caused by condensation resulting in moisture.