ISS World Europe 2023 will be held at: 

Clarion Congress Hotel 
Freyova 33, Metro Station: Vysocanska; Line B, Prague 9
Prague, CZ, 19000
Czech Republic 
Telephone: 420 211 131 119

Clarion Congress Hotel Prague is situated in modern part of Prague 
- Metro Station: Vysocanska, Line B, just 15 minutes from the historical center of Prague.

If Clarion Hotel is sold out, you can have accommodation at:

Pivovar Hotel,  just  across Clarion Hotel.

Address:

Pivovar Hotel  
Freyova 1/12, 190 00 Praha 9-Vysočany, Czechia
Phone: +420 283 892 150
Website: https://www.hotel-pivovar.cz/en/

Here is a list of other hotels nearby:

Official website | STAGES HOTEL Prague, hotel O2 arena Prague, hotel O2 universum

Hotel Duo Prague | Best Hotel in Prague

Welcome | Wellness Hotel Step | Wellness Hotel Step (wellness-hotel-step.cz)