Miles & More (Lufthansa, Austrian, Swiss, and other partners) - * Gold Lounges at AMS

Will travel the first time to AMS with LH next weekend.

I only used the KLM Lounges so far, so my question is about the SEN/* Gold lounges at Schiphol.

Hay anybody been to the LH SEN or BMI Lounge ??

Hay anybody tried to access the SQ lounge flying ECO on LH metal ???

Thanks for your time and help !!