Looking at that last review i dont hold out much hope for the food or entertainment...
Everyone is entitled to their view, but remember what's one man's meat is another man's poison it's a 3* hotel catering for the masses.
Are there 2 hotel Rosamar's in Benidorm? because this hotel was refurbished in 2005 and when I read reviews about it being dirty and ready for refurbishment, I wonder if we are talking about the same hotel.?
I was in there last Xmas with Lizzie Dripping and also in April, we actually went and had a few days around the pool, we bought a sandwich/drink and there was no sunbed problem then, which is understandable at that time of the year.
The only thing I think they spoilt was the swimming pool, they sectioned it off with a concrete/tiled abstract type of thing with a waterfall, whereas before it was an oblong pool, ideal for the early morning serious swimmers.
Chose where you go the sunbed situation will be the same in the height of the season, the only people to blame are the people getting up at the crack of dawn to reserve a bed"¦the Spanish probably sit back and think you stupid sods, you are supposed to be on holiday and are getting up earlier than you do for work at home.
Oh lordy me, there are Spanish in the hotel and they cater for them, now there's a surprise"¦in Spain.!
Fatboy hit the nail on the head in his report,

you speak to them like poo and they'll answer you back the same show them some respect, try and say please, thank you in Spanish and their whole demeanour changes towards you.
Entertainment a joke.? Well it usually is because the hotel's cannot compete with outside, afterall you are in Benidorm, the European capital of entertainment and it's rather sad to stay in the hotel every night when there is so much on offer outside. IMO !
I also wonder why they are charging the Brits for the use of the fitness room and not the Spanish?

Could it be that the Spanish have already paid for the use of the facility in their booking/prices.?
This made me smile"¦I've just been on a Spanish site and they are complaining that there are too many foreigners in the hotel, they reserve the sunbeds and they suggest that the norms of the pool are enforced because people do what they want, they take in balls, inflatable boats, they do not shower before using the pool, they enter using footwear from off the street and bathe with T-shirts on
Yes, they are talking about us Brits.!
Go enjoy yourself Tony.
Sanjiiiiiiiiiiiiiiiiiiiiiiii