I stayed at Gatwick on weekend. Booked basic room, was upgraded to deluxe pre-checking. Got the room I chose online. Unfortunately room smelled of cigarettes so had to go back all the way to reception to ask for another room. I got complimentary upgrade to executive room but I didn't have a chance to use any perks as it was too late.
Also got voucher for drink at the bar. Bar was crowded and only table free was one under the leaking roof.
I don't think I will be coming back unless there's no other choice.