Stay99 Underground features accommodations within 600 yards of the center of Poznań, with free Wifi and a kitchenette with a microwave, a fridge, and kitchenware. There's a private entrance at the apartment for the convenience of those who stay. The accommodation offers luggage storage space and bicycle parking for guests. The apartment offers a flat-screen TV and a private bathroom with slippers, a hair dryer, and shower. At the apartment complex, units include bed linen and towels. Popular points of interest near Stay99 Underground include St. Stanislaus the Bishop Church, City Hall, and National Museum. Poznań-Ławica Henryk Wieniawski Airport is 4.3 miles from the property.