Room poorly designed, Air conditioner is in an alcove and poorly cools the room. When we arrived the A/C was off, turned it on and left for several hours, came back and room hot. A/C not working, I looked and saw a lot of Mold in the discharge portion of the A/C unit. Asked front desk to be moved to a different room, None available. had Maintenance come and look at unit, I had to tell him what to do including cleaning mold and caked dirt on evap fins of unit. once unit was cleaned it worked but not well due to where it was located.