If it's big enough, I was thinking of a main desk. Maybe a two-seater sofa on one side? [ And because it's a space meant for the two of them... ] Maybe tatami chairs and a lower table for tea...

[ As the snacks are wrapped up, and he finishes his own cup of tea, the moment he sets the cup down, he feels Ayaka's weight leaning against his side, her head resting on his arm. Perfect timing on her part for her beau to slip his arm around her waist. Heaving a sigh of relief, Cloud tilts his head down to kiss her on top of her head before gently leaning against her in kind. ]

Not gonna be forgetting today any time soon...