Decided to stay at Sebastian's place due to price and availability. It was F1 weekend so was fortunate to find a place.
The apartment was exact to the listing, this is a room that is part of a unit with other rooms. There is a common kitchen area that can be used, and there is even in house laundry facilities.

I was fortunate enough to get a pickup from Sebastian, though the apartment was minutes walk from Mattar MRT station (downtown line). This gives easy access the city and there are also plenty of bus options as well.
There are food options nearby with a few hawker centers, and a few supermarkets not far either.
I enjoyed my stay and would definitely stay here again on my next visit.