The multi cuisine restaurant at Hotel New Castle of Gangtok, Dolphin serves a variety of foods including Chinese, Continental, Indian, Mughlai as well as local Sikkimese foods. A bakery in Hotel New Castle provides its guests with delicacies like Dough-Nuts, German-French Loaves, Cookies, Cakes, Brown-white-fancy-sweet Breads, Patties and Pastries.
Hotel New Castle entertains their guests with a bar stocked with Indian and foreign liquors. It also serves local breweries like Chang and Neegar to their guests on request. The conference and banquet halls of Hotel New Castle are well furnished to receive corporate groups. The communication facilities of Hotel New Castle are totally updated with Internet and Fax Services and telephones with STD/ISD facilities.
The rates of Hotel New Castle in Gangtok stand as follows:
| Room Type | AP Plan | MAP Plan | CP Plan | EP Plan |
| Penthouse(Double occupancy) | 5900 | 5300 | 4700 | 4500 |
| Penthouse(Single occupancy) | 5150 | 4850 | 4550 | 4400 |
| Suite(Double occupancy) | 4900 | 4300 | 3700 | 3500 |
| Suite(Single occupancy) | 4150 | 3850 | 3550 | 3400 |
| Deluxe(Double occupancy) | 3900 | 3100 | 2700 | 2500 |
| Deluxe(Single occupancy) | 3150 | 2850 | 2550 | 2400 |
