I've visited a few times now and think it's great for it's value when a pick-me-up is needed. On this visit I just had a massage, so I missed the extras' (robe, slippers, comp tea etc) that you get when also visiting the spa.
The massage was good, it wasn't as relaxing as I had hoped but I think that's due to how tight my back was - the lovely masseuse straightened me out so it was definitely worth it. Will be back again.