We got Married in Zante In August last year and stayed with all our family at the cosmopolitan for the first 2 weeks.
Very disapointed when we got there not upto the usual basic standards the english expect. Showers were dirty and we had 6 rooms and all were similar.
The Bar was open late and had loud music playing.
After the initial panic and shouting at the Rep we calmed down and decided as we didn't want to get split up we would stay.
Best decision. It was so difficult to be angry with the bar / hotel staff as they were so friendly and helpfull. We had a 20 Month old child with us and we were near to the Bar.
The noise didn't matter wasn't as bad as some people had made out, with the windows shut couldn't hardly hear anything. We used the showers but My Wife just closed her eyes!

If you have allready booked this holiday don't worry anout it, Nice central location quiet pool, relaxed everything! Just see through the initial sub-standard facilities.
We actually had a 5 Star Hotel boked for a third week and found it disapointing as the staff were all snotty and most of the people in the hotel were Foreign.