The communication with Sun was very stressful and shady. We were not official hosts from the Marina Bay San and had to keep it secret (no room service, no requests to hotel itself, no services) which made us feel uncomfortable. Furthermore shortly before Check in we were requested to pay 100€ more on order to have access to the pool which was a new info for us and not according the offer. Also breakfast should have cost extra. When we refused to pay the extra amount, Sun was really upset and insulted us. We had to open a mediation case. Would recommend to pay a bit more and check in officially!