Mercure Gdańsk Posejdon is located in Jelitkowo, a recreational district of Gdańsk, surrounded by lush greenery, and just about a 3-minute walk from a sandy beach, Jelitkowski Park and the seaside promenade connecting Tricity. It is 1.5 km to Ergo Arena and 10 km to Gdańsk city centre with its numerous attractions. Guests have free access to the swimming pool, as well as a gym for adults in the garden. The non-smoking rooms come with free WiFi, cable TV and larger, comfortable beds. Each comes with a private bathroom, as well as a tea and coffee set and a fridge. Baby equipment can be provided upon request. The hotel features a fitness and wellness with a gym, dry and steam sauna, beauty services and massages available at an additional fee. The hotel services include a web corner in the hall, a children’s play area, safe deposit and secure car park at an extra fee. There is also a conference centre with 6 fully equipped conference rooms. Guests are welcome to relax or have a meal or a drink in the garden. There is also a jogging track and a children's playground. There is also a fenced car park. Winestone restaurant is a unique culinary concept created by Mercure. The menu includes dishes served on black stone plates, as well as a wide wine selection from around the world. On selected days and times at the pool there are additional paid aquaerobics classes, a detailed schedule of classes is available in the room under the QR-code or at the hotel reception. Gdańsk Lech Wałęsa Airport is 15.4 km away, Gdańsk Oliwa railway station is 3 km away and city centre and Gdańsk Główny railway station are 10 km from Mercure Gdańsk Posejdon.

Hostům, kteří se zde ubytovali v páru, se velmi líbila lokalita – dali jí hodnocení 9,3.