Local SEO is not a licence to copy the same page 50 times and swap the city name. A useful local page should reflect a real service area, real business details and content that helps a customer make a decision.
Start from real service intent
Separate materially different services into useful pages. A visitor searching for an ecommerce store has a different task from someone looking for a one-page company site, even if both searches include the same city.
Use geography where it is truthful
Mention cities and regions you genuinely serve, but do not invent offices, addresses or local teams. If the service is delivered remotely across Poland, say that clearly.
Build trust signals
Keep contact data consistent, explain the collaboration process, show real work where possible and use a Google Business Profile only when it accurately represents the business model and eligibility.
Internal links should explain relationships
Link from a regional page to the relevant service pages and from service pages to useful guides. Use descriptive anchors rather than generic “click here”.
Measure local search
Search Console queries, page impressions and qualified enquiries matter more than manually checking one personalised ranking. Track which intent and location combinations actually lead to business.