Just to advise everyone, I had trouble finding a hotel with suitable furniture for my elderly Mum who is unable to sleep in a bed and sleeps in a chair. In Benidorm, hotelos and apartments do not have very comfortable "Easy" chairs or comfortable sofas like we do here.
I managed to find a company called "Easyhire Spain" who are going to hire us a rise and recliner chair for the duration of our next holiday. They call it a lift up chair.
They also hire out other disability aids along wiith wheelchairs, walkers, walking sticks,electric wheelchairs, mobility scooters and the famous "Limo Scooter" which is an electric scooter with one seat in front and one behind for the people who are not confident enough to drive a mobility scooter themselves. This has to be ordered about theree weeks in advance.
There are other companies in Spain such as Amigos, who also hire out scooters, wheelchairs, walkers etc. Hope someone finds this helpful