I booked a room 4 months in advance at a cheap rate with a hotels.com platinum membership discount and used my onekey credit.
On arrival, the owner made me "top up" the rate to 160% of the cost due to double occupancy instead of single (a genuine booking error), making my small, windowless room much less of a bargain.
I have no issue paying a surcharge for double occupancy, but am upset that my onekey cash was disregarded and mainly that the owner was so deeply unpleasant about the situation.
Watch out for the menu too - the one on offer doesn't match the website, there are no veggie options and the response on questioning was "that's the menu".