Female (68) seeking apartment in Burnham-on-Sea

I am a 68 year old pensioner widow. My husband was ex-British Army. My income is new State Pension plus Housing Benefit. My health is not improving and I need to move to be nearer my son and grandson in Berrow, Somerset, to be both a support to them and them to me. Ideally, I need a ground floor retirement flat as close as possible.