2nd floor of Isetan, baby department.
Portable high chair, changing tables, 2 sofas, hot/cold water dispenser, 2 nursing rooms separated by doors with locks. Nursing room has chair and table. Just big enough for a stroller.
Isetan’s nursing rooms are well-known to be fully equipped especially with high chairs to feed the toddlers and a waiting/seating area for the daddies. However, it is usually crowded especially if you go there in the weekends. I ended up having to nurse at the waiting area.