BTS has been expanded from there multiple times, but I guess this was very old end at Onnut (beside a big tesco-though that may have opened only later). There are/have been mutliple saunaś in this residential area with low rents for new buildings. From what i recall (but I am certainly not someone who remember that all) noone has survived for a very long time-they change name/location when first cheap lease/rent expires.
Frankly, going after sweet memories from such a long time ago will only lead to disappointment-except for maybe pointing: this is where I once..........