So I have stayed in hundreds of hotels.
The SLS has a modern feel, some noted it has an idea feel, (all white decor/chandelier ect.)
5 stars for vet
5 stars for check in/ upgrade via Diamond Status
5 stars for room style and swank
*note: I loved the mirror on the ceiling and and the glass wall of the shower (except that it was incredibly impractical!)
5 stars for service (needed an extra room key)
Overall, we loved it and will be back.