Is shuu and mc lover? If lover its easy to obtain good date.For me,its hard to obtain good date if it's don't have enough money(most money save on rent fee).I recommend just go place that cheaper.Just aim the smiley face if you want to go love hotel afterword.When you date,give some gift and use a (hand with love) on certain part of their body.For example,shuu like if pat on head.
Yeah, I've found the best way to improve date quality is to touch them (You can buy presents but you don't need to so long as you go to a date spot with enough action points/turns). Each of them has places they like to be touched and places they don't. Touching them in the wrong place will upset them, so try to avoid it for a perfect date.
For example, right now I'm aiming for Tocchan's route. I take him to the flower shop because he enjoys it but it's also cheap (It only costs 500 to go to, so I still have money left for rent) and it gives enough action points for a perfect date. For Tocchan I touch his hand 5 times and the Smiley gets heart-eyes, meaning I got a perfect date.
Basically just make a save before a date with your crush and experiment with what they like. If you get it wrong or want to see what other things they like, just reload the save.