InterContinental has retained its grip as the world’s largest hotel chain, according to the annual ranking of hotels by accommodation analyst MKG Hospitality.

The British company, which operates brands including Holiday Inn, Crowne Plaze and InterContinental, offers a whopping 647,161 rooms around the world, more than any other hotel chain despite growing slowly over the past year.

In second place in the listing released this week is Wyndham Hotels, which offers 612,735 rooms but is gaining quickly (adding 2.5% more rooms in the last year).

If you’re looking for an ethical bed for the night, Marriott or Wyndham might be the easiest options, according to a recently-released survey.

The hotel giants were selected among the four most ethical hotel chains in the world, along with two smaller competitors — luxury chain Kimpton and German group Rezidor Hotels (operators of Radisson Blu and Park Inn).

All four were chosen as the leading travel providers among the world’s most ethical companies by Ethisphere, an international think tank.

Wyndham has become the latest hotel chain to open a new property in Panama, with this week’s launch of the Wyndham Garden Hotel Panama City.

The 70-room hotel, located in the city’s quiet and exclusive Obarrio neighbourhood, is yet further proof of the hotel boom in Panama, which is currently has more properties under construction than anywhere else in Central and South America.

The property is  aimed at both business and leisure travellers, with 32-inch flatscreen televisions, marble bathrooms, a fitness center, restaurant and bar.

Major hotel brands have been unveiling expansion plans in China at a key conference over the past week.

Many chains are planning to considerably beef up their presence in the country, with a series of deals unveiled this week at the Hotel Investment Conference Asia Pacific.

Hyatt announced a total of 11 new properties, confirming that four new hotels would be opened next year in Ningbo, Jinan, Guiyang and Qingdao, a mix of areas designed to target both business and leisure travelers.