Lina's airbnb is an accomodation and an experience on itself as you will be staying in Marina Bay Sands! It is really worth it to book it with Lina. You will meet with her or her friend somewhere and they will give you your card keys and after that you will be able to use all the installations in the hotel. Yes, you might need to say your name is another but I think it is fine as long as you remember it. No one will ask questions. Lina gives you a lot of recomendations and she explains everything and she is available 24 hours. One of the best airbnbs I have ever been to!