The hotel's interior design is a masterpiece of modern luxury mixed with traditional Finnish beauty. A feeling of refinement and style is created by the use of modern furniture and artwork by Finnish artists, while the use of natural materials like wood and stone mirrors the surrounding scenery. The foyer is a warm and inviting area that welcomes visitors to unwind and take in the ambiance. It features high ceilings, luxurious couches, and a stunning glass piece by artist Klaus Haapaniemi.

The 148 guestrooms and suites at the St. George Hotel are each havens of luxury and peace. The rooms have a warm, minimalistic design with calming color schemes, plush linens, and custom furnishings that all come together to create a comfortable, welcoming atmosphere. The apartments are flooded with natural light thanks to large windows that provide breathtaking views of the peaceful courtyard or the metropolitan skyline. After a day of touring Helsinki, visitors may relax and refresh in the roomy marble bathrooms, which come with rain showers and high-end bath products.