Firstly, credit where it's due- the photographer for this hotel deserves an award. This is two hotels joined together, one of which (grand hotel I) they have started to refurbish. Unsurprisingly, all the photos are from the refurbished parts, grand hotel II looks like if you walked into a best western that hadn't been updated in 40 years. When I asked the receptionist if we could move as the room was nothing like the photos, she was sympathetic (they get it a lot) but none of the 'newer' rooms have balconies and not many have sea views.
They would do nothing towards a refund or gesture (the photos are so fake that there is one making the pool look as though it is directly in front of the hotel, where a pool normally is, rather than the reality of crossing a car park and road), and hotels.com did virtually nothing to help - yet they're willing to take their cut, of course.
Don't expect to use the pool, people queue to put their towels down at 8.30am or whenever it opens, and then leave the loungers largely unoccupied. The area of Opatija is nice, but this hotel is nothing short of horrendous.