Pretty sure I read the answer in here before. Check a few pages down, I think the old folder was in data/something/something., Ctrl-F is your friend. The new saves should be in the same location as the PC ones under your exploded folder, I think.
Two or three pages down. Ctrl-F is very much your friend. Look for data/ (with the / at the end).
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.
Probably you updated your android to version 11. Starting from android 11 there is no way to work with android/data folder because google restricted this. Try to find a program that can get around this restriction.
*lucky me, I found news about this new rule and restricted android updates before it forced me to update*
