To get to Mitsukoshi Isetan, you can access it directly from Exit A5 of the underground passage, and there's a resting area with seating near the entrance/exit.
Two sets of three-seater leather sofas are available.
They're comfortable, but since they're near the entrance/exit, it can get crowded, and there's a lot of foot traffic, so it might not be the most relaxing spot.
Because it's close to the station ticket gates, it's a great spot to wait for someone or take a short break near Mitsukoshi-mae Station.
Why not use it when you're shopping at Mitsukoshi Isetan or as a resting place near Mitsukoshi-mae Station?