The eatandstay.com travel guide recommends these hotel reservation services:      for Europe Bookings Hotels, for the UK CNG Hotels, and for the US Travel Now.

For hotel reservations in South America, we recommend Bookings' Argentina Hotels, Chile Hotels, Brazil Hotels,
Buenos Aires Hotels, Santiago de Chile.
Where to eat and stay? Find the best hotels and restaurants in our worldwide travel guide. Select the appropriate continent to navigate to the city of your choice.
Explore its history and its dining, shopping, sightseeing, nightlife, and cultural opportunities. Eatandstay.com covers more than 5000 cities and tourist destinations worldwide.