It is between Venturian Street and Hviezdoslavovo námestie (Bratislava) (literally Hviezdoslav Square).

This two-storey Baroque mansion was built in the first half of the 18th century on two parcels of medieval land.

In 1730, after Gabriel's death, Anne Sophia sold the house to Rosalie Amadeus Simonits for 400 golden crowns.

And after a long time of non-Keglevich ownership, on 15 February 1745 Joseph Duchoň sold the house to Countess Teresa Keglevich (born as von Tavonath) for 7,000 golden crowns.

He offered his palace as accommodation for members of Diet of Hungary (Uhorský snem).

In 1796 Ludwig van Beethoven stayed here, where he wrote his Grand Sonata for the piano, which he dedicated to Babette Keglevich, his student.

Arguably, Joseph I. had been the owner of the palace until his death in 1813 when it was inherited by his widow and her son Carl Keglevich.

In 1732, Joseph I. Keglevich was the Vice-counsellor, the counsellor of the secret council, the protector of the Royal Crown and Main District Administrator of Torna County.

Keglevich was the secretary of the Vice-council, member of the Diet of Hungary ("Hungarian Parliament") and also, like his father, the protector of the Royal Crown.

On first floor, in western wing, remained a late-Gothic comb-star-shaped vault from the 16th century.

In the eastern wing of the Keglevich palace is an avant-corps which originally was a part of different building.

A portal with pilasters and a segmental cornice is lined with lion statues and decorated with the coat of arms of Count Joseph Keglevich.