Ultimately this is up to you.  A normal therapeutic session lasts one hour, including time for a brief verbal assessment as well as follow-up time after the massage to get feedback about your experience and to schedule your next appointment(s).  Insurance companies will only pay for one hour of treatment per day, but you may pay out of pocket if you’d like to make the appointment 90 minutes.  For clients looking just to relax, I offer 30, 60, or 90 minute sessions.