You may find this disappointing. But it is part of who I am... I rarely go out at night when I travel.
Yes, typically I am back in my hotel room by 9:30pm... Writing and catching up on things. And currently, the season in Europe means the Sun doesn't even set until close to 10pm. So I made a strict effort while in Budapest to stay out a little bit later, so that I could capture the sites of Vaci Utca and esplanade-area around my hotel here on the Pest side of the city.
Budapest is a city you must see at night.