In the link above you will find link to QC code https://lin.ee/0bEVlWQ
and you can join them on Line using that. I just did yesterday. So far they did not send me anything other than introductory welcome message.
before closure they specialized in hunky masseurs, it's why I'm one of those looking for the to re-open hoping they will stay that course.
It was one of shops on more expensive side, 1000 massage 1500 min. tip.
as for experiences , like most shops it varied depending to whom you talk but I was lucky one and invariably was leaving premises very happy every time. M, Jack, Tim, Tik and few more were outstanding.
On personal level Senso along with Arena were only two gay places where I had goosebumps on approach, don't ask me why. Even in May when I know surely shop is still closed when passing by to my hotel I noticed increased heart beat. It must be underground river or something , lol.