The ruins of a cistern and a mosaic floor are in the lobby of Eresin Crown Hotel, a short distance south of the sphendone of the Hippodrome and the cistern of Nakilbent Street. It is one of several cisterns found in the area of the Great Palace of Constantinople. Several archaeological finds discovered during excavations are also on display in the hotel lobby. 
Between 1994-1997, the foundations of the hotel were excavated before the construction of the hotel began. Most of its eastern side was missing, while a section of its western side, which shows evidence of two distinct phases of construction, has survived.  The first phase of construction, which probably dates to the 5th or 6th century, includes the remains of a brick arch. It seems that this is also the nearby mosaic floor and several marble columns and capitals discovered during the excavation date to the 5th or 6th century. As the site was probably within the grounds of the Great Palace of Constantinople, it is possible that the mosaics once belonged to a structure of the palace, such as the courtyard of a peristyle. The mosaic floor has a geometric pattern with guilloches of black, light brown, cream, red, pink and green tesserae, with a large fish inside a lozenge. 
In the second phase of construction, two rows of reused columns were used to fill in the arch. The mosaics were damaged during the construction of the rectangular structure. This structure is made of brick and its inner surface is coated with hydraulic mortar, which was typically used in cisterns. The discovery of water channels under the floor has also led to the suggestion that the structure might have been used for water distribution rather than as a cistern. The excavation also uncovered grave steles and grave goods dating to the 3rd-2nd century BC, indicating that this area was a necropolis during the Hellenistic era.