Please comment below if you continue to have issues with achievements. Yes, they should now be working. Loading your save game _should_ be enough to trigger the progress to be updated. (As I am now re-sending achievements when the game is loaded just in case steam was offline for a bit)
One quick note on the Concierge achievement: the developer has said that the hit box for one of the hotels is somewhat misplaced. In order to get this achievement, your best bet is to visit each hotel, hop onto the entry ledge, and shuffle back and forth across the width of the ledge.This specifically impacts Villdyse Hotel in the southernmost central part of the map: "To trigger [that hotel] currently, you will need to climb straight upwards and hop on to the ridge above."
And a note on 0/3, 0/8, and so forth... it appears the engine does not actually allow partial achievement reporting, so even though the devs set it up at the Steam end, they couldn't find a way to have the game report the achievement in progress. When you get the Concierge achievement, it'll jump from 0/3 to 3/3 in one go.