We are going again in august enjoyed so much last year going again, i wouldn't worry about any building work as none was taking place when we went last year, there were signs of building that had taken place stopped for the tourist season which is end of april.
Most people we spoke to about kids dens said they were ok but wished they hadn't payed the extra as they were not in rooms long enough(sleeping and getting ready in morning)
As for laundry i didn't notice a laundrette on site, just bought a box of soap powder and hand washed clothes that were likely to be worn again
there are a number of shops under reception area Jewerlers-leather shop-sun glass shop newsagent mini supermarket type, you can get buckets spades blow up toys etc but expect to pay more than poundstrecher.
Markets, there is the main one in sagreime town every sunday good selection of fake designer goods just watch out on sizes (large ones are not so large ie Xl is a L) good bargins to be had, remember to barter they prefer the english pound you will get better deal in £ than lira, don't bother with euro's.
every wednesday pegasos has a turkey night were a selection of market stalls are present, but more expensive than market in the town (these same stalls are at the sunday market)remember at sunday market the traders are keen for you to buy if you pick up someone then change your mind they may run after you to get you to buy it, happened to me last year looking at turkish delight, but no harm done just good fun
Take loads of pound coins for kids club again you gett better deal in £ i.e they take 3 lira or £1 at moment it is 2.54 lira to the pound, i only used lira for tipping and to use taxi for town.
hope this helps any more questions i will answer