Situated nearly a 25-minute walk from the byzantine basilica Hagia Sophia Museum, the 3-star Grand Ons Hotel Istanbul features a banquet hall for planning various activities. The hotel is located in the vicinity of the Ottoman imperial Pertevniyal Valide Sultan Mosque and welcomes its guests to use a sundeck and a shared lounge or to enjoy Turkish cuisine in the onsite à la carte restaurant.

Enjoying an ideal location in a shopping area, this Istanbul hotel is 400 m from the Sokollu Mehmet Pasha Mosque. Miniaturk Miniature Park is around 6 km from the Grand Ons, and Istanbul Sabiha Gokcen International airport is 45 km away. Nature lovers will appreciate the vicinity of Golden Horn, which is about a -minute walk away. Istanbul Riverside Museum of Modern Art lies 2.9 km away, while Yenikapi tube station is within a few blocks of the property. Situated in the old centre of Istanbul, Grand Ons Hotel is within 5 minutes' walk of Yenikapi transit bus stop.

There are 90 rooms at the hotel, each of them has central heating, as well as entertainment amenities such as a flat-screen TV with satellite channels. Also, there is a personal safe, a mini-fridge-bar provided. The bathrooms come with a separate toilet, a shower, and a sink, along with hair dryers and bath sheets. They offer views of the city.

The Grand Ons Istanbul offers a free continental breakfast with freshly baked bread and fresh fruits. The rooftop bar, decorated with a fish tank, is the place where guests can indulge in refreshing drinks. The bar area includes a terrace and a lounge. Byzantion Bistro & Restaurant is ideal for tasting Turkish cuisine and is situated in close proximity to the Grand Ons.