When the Commonwealth did not have a diplomatic post in the capital of the Ottoman Empire, its function was symbolically fulfilled for a time by the residence of the Czartoryski's partisan, Michał Czajkowski (1804-1886), known in Turkey by his assumed Muslim name Mehmed Sadik Pasha. Tchaikovsky arrived in Istanbul in 1841 as head of the Eastern Mission Head Agency of the Lambert Hotel. Initially, he was an organiser of the lives of Polish émigrés, including some of the November insurgents who had found refuge in Turkey. On the initiative of Prince Adam Czartoryski, he created a Polish settlement near Istanbul - Adampol (now Polonezköy).

In 1850, he converted to Turkish service and embraced Islam. Tchaikovsky himself was one of the most prominent creators of the Ukrainian school of Polish Romanticism, alongside Antoni Malczewski, Seweryn Goszczyński or Józef Bohdan Zaleski. Born in the Zhytomyr region, he studied in Warsaw, took part in the November Uprising, after which he emigrated to France, where he found himself in the circle of associates of Duke Adam Czartoryski. His life's choice was Ludwika Śniadecka, daughter of Jędrzej Śniadecki, who was one of the most colourful figures in the Turkish Polish community of the time. After her death, he married a Greek woman. Czajkowski was granted a Russian amnesty in 1872 and decided to return to his homeland. He had already manifested Pan-Slavic sympathies, while on his return he converted to Orthodoxy. In 1886, he committed suicide. His son, Vladislav Tchaikovsky (tur. Muzaffer Pasha), served as governor of Lebanon. Mikhail Tchaikovsky's best-known works include: "Cossack Novels", "Wernyhora", "Stefan Czarniecki", but also autobiographical texts: "Gavędy Mikhail Tchaikovsky", "Memoirs of Sadyk Pasha", "Turkish Anecdotes" (published in Russian).

Mr and Mrs Czajkowski settled in the Jihangir (tur. Cihangir) district. Their house has a magnificent view of the Bosphorus. Already in the 1950s, distinguished guests, both Poles and foreigners: Turks, French, Italians and others, visited their villa. One such guest was Antoni Ilinski, better known in Turkey as Mehmet Iskender Pasha. The visit to the Czajkowskis is mentioned in his - unpublished - diary by the Polish-Albanian landowner Teofil Benislawski.

The spacious villa with twenty-four rooms was built in the mid-nineteenth century. Sadyk Pasha lived there until 1872, and after he left Turkey, this house was sold to the arms dealer August Hübner. At the end of the First World War, the house was purchased by the Turkish Minister of Justice, Nejmettin Kodjatash. For a year or so (1926) the residence gave hospitality to the Japanese Consulate, while from 1927 to 1950 it was again the residence of the Kodjatash family (Tur. Kocataş). Thereafter, the villa was used as an educational centre for American culture and art courses.

Today, the Michael Tchaikovsky House is closed to the public. From the front, all that can be seen is the fenced, small courtyard and the three-storey villa, the central part of which is slightly overhanging. The first storey is accessed by seven stairs, with windows placed in the sides. There is a balcony in the middle of the second storey, while the last storey has three windows. Some sources state that the residence has six floors (perhaps the other side of the building was built on a lower level?), but it is currently impossible to verify this.

Located in a prestigious part of Istanbul's inner city. Unused, it is slowly falling into disrepair. In 2021, the building was put up for sale at a price of around 40 million Turkish lira. The area of the residence is 460 m2, while the plot of land on which the building is located is 1320 m2.