Accommodation In Sai Yok Yai

We are in need for accommodation in Sai Yok Yai along the Kwae Noi River opposite the Dawadung Cave this weekend. There are two raftels. One raftel is near the bridge (from Rd 323 leading to the cave) and called either River Kwai Paradise or Phae Ingthan (we are not sure, but it caters mainly Russian tourists); the one a bit more south is Wang Nok Kaew Park Resort. For the first, we found nothing on booking sites and all phone numbers found on the Internet were incorrect; for the second, all booking trials state that there are no rooms available (which we doubt). We would like - if possible - the phone numbers for the two locations. Is there somebody who can help us out?