Putting it together: They might want a recommendation for a high-quality park or spot in Shinjiku where they can relax and be happy. Or maybe a place in Shinjuku where you can stop (as in take a break) and enjoy a happy, high-quality experience. I need to confirm the key points.
I should focus on Shinjuku Gyoen as a top choice, maybe also consider places like Keio Plaza Hotel's observatory, or the Park Hyatt's hotel bar for a more upscale experience. Also, if it's about food, high-quality restaurants like Sushi Saito might be relevant. shinseki no ko to wo tomaridakara de nada happy high quality
"Tomaridakara de nada happy" – "tomaridasu" is to stop temporarily. Maybe "Tomaridakara de nada happy" translates to "stopped, so just happy." Maybe they mean they stopped doing something and ended up being very happy. "High quality" could refer to food, a place, or an experience. Putting it together: They might want a recommendation