I had a very similar case to the previous case. My family and my friends family stayed at this villa this week and we also were robbed of all our cash on the last night of our stay. It does sound like an inside job as they new what 2 rooms to enter and someone had unlocked the balcony doors to these 2 rooms during the day while we were out. I strongly recommend not to stay at this villa as there is no security at all, we also received the same response as the previous victims that they are going to install cctv cameras, they said this 7 months ago to the victims and nothing was done. They also waved our taxi fees, the big sum of $2500 baht, nothing compared to what we lost, it all sound so too familiar.
STAY AT YOUR OWN RISK