Quality time with your partner is best spent where both of you are comfortable.
However, it may vary according to what you two are going through. Sometimes you may need to spend it as two in order to have & build a more intimate, personal connection & mend all that’s breaking if you’re facing a deep situation that needs a more private bond.
You can decide to watch a movie together, lie down in the dark, share a meal, have a great outdoors like a jog, walk, swim etc. & at other times, a group moment is just the right trick. To bond with other people especially those that bring light in your relationship. You can hang out for pizza, movie, drink, anything.