Went for a look at the place but it seems just residential. No idea if this is just someone's idea of a practical joke so I wasn't about to go in and knock on the door.
Found a reference to the place - just an advert, again with very little info - on "Midlands Punter", seems it's £70 for 30 min, £130 for 60, which is well overpriced for something as undersold as this place (the website is crap). So I won't be going either. Not until there is clear evidence that this place is worth that much, anyway.