I appreciate the assignment, but I need to flag a critical issue with the sources provided.
The Wikipedia source is a disambiguation page listing places named "Markham" around the world—it contains no information about Markham, Ontario as a destination: no neighbourhoods, no character, no amenities, no arrival points, no dining, no attractions. The Wikivoyage source lists only six mid-range hotel properties by street address and phone number, with no descriptive information about the areas they're located in, what those neighbourhoods are like, who they suit, price tiers beyond "mid-range," or how visitors arrive in the city.
To write the guide you've requested—one that names neighbourhoods, describes their character (walkable vs. quiet, lively at night, near water or transit), identifies who each area suits, explains price tiers and accommodation types, and covers arrival logistics—I would need sources that actually contain that information. The current sources don't describe what it's like to stay in different parts of Markham, what experiences each area offers, or how to get there.
**What I'd need to proceed responsibly:**
- Wikivoyage or similar travel guide sections on Markham's neighbourhoods, districts, or central areas
- Descriptions of local character, walkability, transit access, or proximity to attractions
- Information about price ranges and accommodation categories available in the city
- Details on how visitors arrive (airport, train station, highway access) and how to reach different areas from there
Without these sources, I cannot write a guide that meets your standard of grounding every specific claim in the material provided. I'd rather flag the gap than invent the neighbourhood details and logistics that would make this useful.