IKHSAN, Masrul; SARI, Sukarni Novita; JUARDI. The Concierge’s Role in Improving the Quality of Front Office Department Services at Manhattan Hotel Jakarta. Journal of Sustainable Tourism and Hotel Management, [S. l.], v. 1, n. 1, p. 21–32, 2025. Disponível em: https://journal.idscipub.com/index.php/sthm/article/view/309. Acesso em: 12 may. 2026.