As mostly a leisure traveller I’ve experienced many differing hotel hairdryers.
There’s the wall-mounted one that looks like it’s made from a vacuum cleaner hose so any attempt to do a proper blow dry is impossible. Then there’s the hairdryer in the drawer of the dressing table which only seems to have one speed, one heat setting and the need to have finger on switch the whole time to keep it on. Best one I’ve used recently was at a 3* hotel in Barbados. Pity it was in the bathroom right by the basin. It was a proper dryer, wall mounted, great heat/speed settings and managed 20 minutes constant use nearly every day without blowing up. Unlike my travel one which didn’t like their electricity supply for some reason, even with the right travel plug.
Made mistake one year in Cyprus by taking my high-powered salon-type dryer as I thought it would work in their British type plug. All was fine until I got home and the overheating sensor stopped working. Was told it was a result of use outside the UK.