somewhere quiet and beautiful 这里面somewhere什么词性?可不可以解释成形容词修饰不定代词后置这句话的原话是I'm going to retire somewhere quiet and beautiful

此处somewhere 是名词.quiet and beautiful 作后置定语.
somewhere ['sʌmhwεə] adv.在某处；到某处
n.某个地方
somewhere ['sʌmhwεə]
n.an indefinite or unknown location 例句:they moved to somewhere in Spain
adv.in or at or to some place例句:she must be somewhere