Hi, Welcome to OpenStreetMap.

Your mapped business would not occupy the whole 4 storey building. Also the postcode does not apply to this building. It seems the business address is for an office only. The postcode on the website refers to a house on the spur of Curtis Street.

Thus I've made a POI with your info and moved it to the Curtis Street spur. You can now place it over the correct position.

Need any help just ask.
Regards Bernard.