"Best" depends on what you value (heritage atmosphere, modern luxury, dining, location). Short list of the hotels most often rated best overall in Colombo, with a one-line why and who each suits best:

• Galle Face Hotel (heritage, seafront)

  • Why: Iconic 19th‑century hotel right on Galle Face Green with strong historic character, excellent sea views and a uniquely Sri Lankan colonial atmosphere.
  • Suits: Travelers who want atmosphere, history and a central waterfront location.

• Shangri‑La Colombo (modern luxury, skyline & marina views)

  • Why: Contemporary 5-star with large rooms, extensive facilities (spa, pools, high‑end restaurants) and consistently high service standards.
  • Suits: Business and leisure travelers who want modern luxury, full facilities and panoramic city/sea views.

• Taj Samudra (reliable luxury, prime location)

  • Why: Longstanding luxury property near the presidential district and Galle Face Green; noted for polished service and good dining options.
  • Suits: Guests wanting dependable five‑star service in a central location.

• Cinnamon Grand Colombo (best for dining & events)

  • Why: Large luxury hotel with many restaurants, bars and event spaces — strong choice for food lovers and conference groups.
  • Suits: Food-focused visitors, families and event attendees.

• Mövenpick Hotel Colombo (modern comfort, good value)

  • Why: Modern rooms, rooftop options and solid facilities at generally more competitive rates than some peers.
  • Suits: Travelers seeking contemporary comfort and good value.

Quick guidance to pick the single best overall:

• If you want a memorable, characterful stay and classic Colombo experience: choose Galle Face Hotel.
• If you prefer contemporary, top‑tier luxury with full facilities: choose Shangri‑La Colombo.

Practical tips:

• All five are centrally located and convenient for sightseeing, business and the seafront.
• Weekends and festival periods fill quickly — book in advance for best rates.
• If you care about sea views, request them when booking (not every room faces the ocean).

If you want, I can compare any two of these hotels side‑by‑side (rooms, facilities, typical price range) or check current rates and availability.