Balaji Malpani had a room on the second floor at the Hotel Happy Guest. His room was furnished with a couch telephone, sink, safe, and a bed. Both Cate Archer and the UNITY Intercept Team had to pick the lock in order to gain access to the room.
- It is not known if the other rooms were similarly set up.
In 1968, members of the UNITY Intercept Team were sent to Calcutta to photograph Malpani at his apartment at the Hotel Happy Guest. When they arrived they found a note from Phoolwati, Malpani's girlfriend, inviting him to dinner that night.
Pierre the Mime King murdered Archer's contact behind the Hotel Happy Guest. Rumors of the murder spread through out the city, some of them very unsubstantiated.
- The player can hear these rumors if they talk with various Civilians in Calcutta.
When Archer arrived in Calcutta, Kamal Khubchandani provided her with a Telephone Bug that she could use to bug his apartment in hopes to find out the daily password to get into the H.A.R.M. India Headquarters.
When Archer returns to Calcutta to help repel H.A.R.M.'s Super Soldiers, she passes by the Hotel Happy Guest.
- Cramble Castle - A manor used as a hotel in Scotland
- Frankfurt Inn - A hotel in West Germany
- Grand Caravan Hotel - A hotel in Morocco
- Le Chameau Heureux - A hotel in Morocco