Great question — answering as the UphillTech team:
In general, more internal linking implies to Google that a page is important. I don't see why there would be a disadvantage in providing more internal links to a particular page, that's an internal matter for you. However, if you overdo internal linking by making every page important then that particular preference factor is lost. Having non-unique content, however, is a problem. I think you should try and add more city-related content on each page. Content can be in the form of images with appropriate title/alt attributes. When asked if too many internal links on a page do more harm than good, Mueller responds: “Yes and no. I think, in the sense that we do use the internal links to better...
Full answer by Rohit Gupta: https://webmasters.stackexchange.com/a/142384 (CC BY-SA 4.0).
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