Hey man! If you're still wondering on how to keep your progress here are some ways:
*Keep the current version of the game and install the current one, the save files should be fine.. Hopefully.
*In case you need to uninstall the current version of the game to install the latest one (To be safe, do the first three steps, before installing the update even if you don't need to uninstall the current one, because it might delete your current saves)
-goto your File Manager or an Archiver(I use ZArchiver)
-goto the Folder 'Android' then 'data' then the data folder for Harem Hotel, then copy the 'saves' folder (or the data folder of Harem Hotel)
-after copying it, create a separate folder to paste the data on.
-then uninstall the current version of the game and install the latest, afterwards copy-paste the data that you copied earlier to the data folder of Harem Hotel in 'Android'-'data'.
Tell me if you can't fully figure it out, I'll try to make this 'Instruction' better. I'm not the best at this.
Don't even start Ypmaws.. Just don't.