I am quoting:
You should find you own saves from the old apk game in :
internal storage/Android/data/harem.hotel/file/saves
and put it into the new game
Internal storage/android/data/cyou.joiplay.renpy/files/harem hotel/saves
You need to use a file manager of some description, either the one that comes with your Android or one you downloaded from google play. You copy the saves from folder A to folder B.
Once you are done, open the new version of the game and your saves should all be there.
If you cannot find folder A... Then I cannot help you mon.