The respect of the environment, wild and unspoiled, is among one of the feature that has been wanted to preserve in the realization of this magnificent villa.
Is it correct? I'm a bit unsure about the structure of the underlined text.
Another possibility that I came up with:
The respect for the environment, wild and unspoiled, is a feature among the ones wanted to be preserved (or kept) in the realization of this magnificent villa.
Is this what you meant:
The respect for the environment, wild and unspoiled, is among the features that we wanted to preserve (or keep) in the realization of this magnificent villa.