Why Start in Bangkok
Bangkok has the best arrival logistics for this trip shape: direct airport rail options, many late check-ins, and broad hotel inventory at different budget levels.
Using Bangkok as the first five-night base gives margin for jet lag, SIM setup, and one weather-disrupted day without breaking the whole trip.
Neighborhood Priority
For this itinerary, prioritize BTS-access neighborhoods over waterfront-only views. Lower transfer time usually saves more than a premium room with inconvenient transport.
Sukhumvit (Asok to Phrom Phong) and Silom are the best balance for transit, food, and flexible day planning.
Hotel Selection Rules
Filter to properties with at least 8.0 review score, free cancellation, and breakfast option. Those three constraints reduce downside risk most on short stays.
If two properties are within 8 to 12 CAD per night, choose the one with stronger transport access over room size.