御用達
ごようだつ
company (or restaurant, place, etc.) that caters to or is popular with a specific clientele
御し難い is read as ぎょしがたい (gyoshigatai) and means hard to control.
ぎょしがたい
gyoshigatai
ごようだつ
company (or restaurant, place, etc.) that caters to or is popular with a specific clientele