Start your first morning with a relaxed riverside breakfast at The Deck by Arun Residence, watching long-tail boats glide past and enjoying views of Wat Arun from across the river; afterward, take a short public ferry to explore the leafy grounds and photo-friendly spires. Continue with a gentle walk through Tha Tien Market to sample fresh fruit, coconut pancakes and local coffee, then hop on a river taxi to admire the riverside skyline and set the tone for your Old City explorations later in the day.
Stroll through the shaded lanes to Wat Kalayanamit, a striking riverside temple with a towering Buddha and peaceful atmosphere, then cross the river on a short boat ride to explore the riverside community around Wang Lang (Siriraj) Market, tasting grilled seafood, mango sticky rice and sweet roti from lively stalls. Finish with a late-afternoon drink and people-watching on the terrace at Sala Rattanakosin's rooftop bar, where you'll get a different riverside perspective of the sun setting behind the Old City-perfectly setting up evening explorations in nearby neighborhoods.
As dusk falls, wander to Asiatique The Riverfront for a lively riverside promenade-browse boutique stalls, ride the illuminated Asiatique Sky ferris wheel for panoramic city views, and sample riverside street-food like grilled prawns and coconut ice cream. Afterward, slip into the intimate riverside bar Baan Phadthai & Bar (or a similar cozy spot) for creative cocktails and a relaxed soundtrack, letting the soft lights on the river and the distant Old City skyline close your first day in Bangkok.
Begin with a sunrise stroll through the peaceful grounds of The Grand Palace nearby, then head next door to admire the intricate murals and golden Buddha at Wat Pho while enjoying a traditional Thai massage at the temple's historic massage school. Afterward, cross the river by short ferry to explore the riverside antiquarian charm of Bangkok National Museum (for Thai history and royal artifacts) and refuel with a riverside brunch at Ariyasom Villa's café or a local stall serving fragrant noodle soups and pandan coconut desserts.
Wander the quieter lanes of Rattanakosin to discover the atmospheric cloister and murals at Museum Siam, then head to the serene courtyard of Loha Prasat (Metal Castle) for striking multi-tiered architecture and photo ops. Finish with a leisurely boat ride from nearby piers to Pak Khlong Talat (Flower Market) to smell the blooms, sample seasonal fruits from stalls, and watch vendors arrange vivid garlands as golden-hour light softens the Old City.
As twilight settles, cross into Chinatown to join the lively food crawl along Yaowarat Road, pausing to sample peppery grilled seafood at T&K Seafood and sweet, chewy kanom bueang from bustling street carts; weave down side-streets to sip Chinese-influenced herbal tea at Seng Guan Yuen. Finish with a romantic river-view stop at Riverside Terrace at The Mandarin Oriental (or a nearby riverside café) for cocktails or jasmine tea while watching illuminated temple spires and neon-lit Chinatown life reflect on the Chao Phraya, maintaining the gentle riverside-to-Old City progression of your trip.
Ease into your final day with a leisurely breakfast at Roast Coffee & Eatery in Thonglor, then browse the designer boutiques and independent galleries along Thonglor Soi 10 for stylish souvenirs and artisan goods. Continue to the nearby W District art market to sample craft beers and street snacks amid vibrant murals, and finish the morning with a calming rooftop coffee at The Commons while planning an afternoon of shopping in Siam or Pratunam.
Spend a leisurely afternoon hunting fashion bargains and local designers at Platinum Fashion Mall and the nearby vintage stalls of Pratunam Market, pausing for coconut-shake refreshers and mango sticky rice from sidewalk vendors. Later, wander into the airy lanes of Siam Square Soi 2-4 to discover indie boutiques and dessert cafés, then rest your feet with a craft cocktail or Thai iced tea on the terrace of Sala Daeng's rooftop bar as you reflect on the week's temples, riverside views and market finds.
As the city cools, head to Artbox Night Market (Thonglor branch) for vibrant stalls, live music and quirky designer goods-sample craft skewers and local craft beer while hunting for unique souvenirs. Later, retreat to the chic riverside-ish vibe of Rocket Coffeebar Sathon for a relaxed dessert and signature cocktails, then finish the night with a cozy late-evening jazz set at The Living Room (Sofitel) for a stylish, intimate close to your Bangkok stay.