I love around noon times especially if I pre-booked the night before so when I wake up I know what's happening straightaway.
I think that's when I'm most active down below and easily turned on ...I've noticed lately the evening sessions are let's hope for the best may not finish at all .
Also ,longer visits prepare me well also so I don't have that subconscious rushed sense inside me ...I feel like it flows more natural if nothing is planned in the session. Two people intertwined for a moment is a great engagement.