I chose to use countries rather than Hotel chains as the desire to hospitable and accommodating appeared to me as a cultural attribute. If you go to Thailand, not matter where you stay - hostel to 5 star, the general approach to guest has high base level and sincerity. In India it unpredictable. Certain notable landmark hotels have a history and a tradition and they cut across cultures but these are few and far between. Very built and nurtured by Swiss and German management legacy.
A good example is the Taj. Have stayed in 3 different Taj hotel including the one in Mumbai. The differences are vast.
One hotel chain that I found impressive in term of infrastructure and high standards is the Shangrila. their gardens, decor, restaurants and quality of service is high but the staff do have their up and downs.