Offering a lobby area and a restaurant, the 4-star smoke-free Grand Hilarium Hotel Istanbul lies in Fatih with the peninsula coinciding with old Constantinople, 2.4 km from the diminutive Rustem Pasha Mosque and approximately a 25-minute walk from the Holy mosque "Hagia Sophia Museum". Within a few blocks of the Ottoman imperial Pertevniyal Valide Sultan Mosque, the comfortable hotel with 63 rooms features a hammam, a shared lounge, and various recreational opportunities, plus an à la carte restaurant, serving Turkish specials.

This hotel is 700 metres from Sea of Marmara in Istanbul. The Roman monument "Walled Obelisk" is also located within 20 minutes' walk of the Grand Hilarium. Nature lovers will appreciate the vicinity of Golden Horn, which is a mere 1.9 km away. This accommodation stands about 10 minutes' drive from the medieval Greek Orthodox church "Kariye Mosque", popular with pilgrims and tourists alike. Sirkeci train station is just near Grand Hilarium Hotel, while Yenikapi tube station is 300 metres away.

The rooms at this Istanbul hotel are soundproof and include a sitting area, as well as en-suite bathrooms with comforts such as hairdryers and a shower cap. Also, there is an individual safe, a mini fridge bar, tea and coffee making equipment provided. Guests will find hair dryers and a shower cap in bathrooms fitted with a separate toilet and shower/tub combinations. The rooms overlook the city.

The Grand Hilarium Istanbul offers a daily homemade breakfast. The lounge bar offers a large variety of selected drinks. Italian specialities are served at Byzantion Bistro & Restaurant, which is 8 minutes' walk away.