I had the opposite reaction and experience. While the spa was a bit hard to find (just follow the suite numbering and the signs on the floor), the spa itself was new and clean. It is a loft style space so while the soundproofing wasn’t great, there were two partitioned rooms and space felt pretty airy. It felt like one of those legit relaxing spa. Lots of plants. Good professional service. Recommend if you want a clean and discreet experience. If you want extra services, there are other places for that. This place does not do fs.
I don’t think the building houses transients. I saw families getting into the elevator with suitcases. Looks like some sort of hotel/short-term stay airBnB setup.