A quick Google "Bayview Terrace, Derry" gets this...https://www.propertypal.com/bayview-commercial-building-bayview-terrace-derry-derrylondonderry/355348
Can't help with a photo but I see from another site that you are aware of the eye & ear hospital also on the Northland Road. Quite near to it , there is Rock Road, running from Northland to Strand Road. Alot of our streets are called after prominent people in the city. I assume its for your Dr. Rock. I lived nearby and often wondered why it was called 'rock'. I learnt something new today.
Sorry I made that assumption. ! The hospital and Rock rd are so close , its hard too believe there is no connectionI will put in on my 'to look into' list.Hope someone will be of more help.