Originally Posted by
evergrn
I was gonna say... It's a long walk to get to the main stretch of Omotesando from Ritz, and Roppongi is quite a different neighborhood than Omotesando. Even though there's really no upscale hotel in the immediate vicinity of Omotesando, Shibuya has a couple of "quality hotels" that are much better candidates for the OP... not that OP's tuned in anymore. Taxis in Tokyo are not exactly cheap either. Way more expensive than HKG or SIN.
If the OP stays in Shibuya and doesn't want to walk to Omotesando (it's within walking distance), Harajuku is one stop away on the Yamanote Line.