Many thanks for making Sentinel-1 GRD available as cloud optimized geotiffs!
Are SLC products available on AWS right now as well?
In the “Data structure for Sentinel-1” section of the Sentinel on AWS webpage one can read
[product type] = GRD - GRD or SLC
aws s3 ls s3://sentinel-s1-l1c/ shows a single GRD folder only.