During my time at Tarsus, I noticed very few other foreigners visiting, apart from at the waterfall place. Probably due to:-
1. Not many local people speak English here
2. Due to recent terror attacks in Turkey (back then just Istanbul and Ankara) visitors are not in big number.
3. Tarsus has never been well marketed as a tourist place anyway, despite being an birth place for an important man who traveled spreading the gospel who was once opposed to it and killed someone previously. The Christian places could be better represented and some tour groups done, although this is a 99% Muslim country.
This nice little arcade is very pleasant.
I got one of these Apostle Paul fridge magnets, just 3 TL (75p)
Tarsus is the cheapest place I have ever seen for ice cream, a small corner shop sells different local made ice creams for 1 Turkish Lira (25p)