Don't know what the RVI is
Massive hospital in north of the City Centre - Royal Victoria Infirmary.
Is Chinatown easy walking from RVI ? if I could leave car even better, as not too clever driving in centre, one way systems and all that 
One way system and bus lanes with enforcement cameras make getting across the City Centre a nightmare. Easier and less stressful to walk than drive then try to find a parking space.
Massage places around China Town are on the way to the Central Station and Centre for Life so anyone who says they are near there would be convenient.
Bottom end of the Quayside or Gateshead Quayside would be better to take the car as it's a canny hike back up the hill to the hospital especially post punt.