Lots of little things. First, when we arrived (which was after hours, but we did notify VRBO of our late arrival), there were no instructions as to what we should do to get into our room. We went to the front desk which was closed and fortunately, in the low light, I saw our key and instructions (but almost missed it). If I had not seen that, we would have slept in the car. There should have been instructions.
The next morning I checked in as requested. Around Noon of our first full day, we had just returned from the pool and had just finished dressing when another guest walked into our room, using his key card. And that guest had our room booked. That mixup was almost embarrassing.
There was dog excrement in the pool area. My wife saw a maintenance person walk right past it.
Our room, while comfortable was cleaned just twice during our stay and I had to ask several times to get it cleaned the second time, including grabbing a maid to as she was leaving (she did no clean but gave us some towels).
Lastly, the room's AC,while working did not dehumidify the room. It was very damp in our room all week. So while no one of these issues was major, combined, they were disappointing and we would not return to Banana Bay as things stand.