I just came across this item on eBay. It's a luggage tag from the old Roma Hotel that was located on the northeast corner at the intersection of Min Zu East Road and Chung Shan North Road.
I've written about the old Roma Hotel before, which had a small restaurant located near the front entrance. The hotel was on the corner just south of the HSA East Compound where the exchange, commissary, theater and numerous other buildings were located. The US Taiwan Defense Command was at the far northern end of that compound.
Here's an image of that building today on Google Maps Street View. You're facing north from in front of the Caves bookstore and the old Roma Hotel building is across the intersection to your right. Just beyond it was the HSA East Compound. To your right from this vantage point was the Linkou Club Annex and Linkou Hotel.