This is a three star review for a two night stay.
Room: Had two queen beds that were incredibly hard and bound in pleather instead of normal mattress material. We know the standard in Vietnam is hard, but this was surprising. The AC in the room works well but takes a very long time to cool the room from its hot summer state. There is a safe in the room but the front desk states they do not have the physical key to give to us. Given this is such an easy fix, we were surprised they did not consider investing in this common feature and having a key made. There is also no do not disturb sign which would would have used to limit entry into a safeless room. Wifi is acceptable (11mbps download when I checked). Fridge in the room and two mini bottles of water per day left in room (recommendation to put them in the fridge in the future). Hair dryer and decent toiletries provided in good quantity. Drawers in room about to fall off wall but has a functioning wardrobe.
Breakfast: highlight of the property with fresh guava and pineapple juice, crepes, toast, bananas, passion fruits, and over easy eggs. Jam may contain traces of fruit. Coffee was just ok with only milk to add (recommendation to serve condensed milk as most local hotels do).
Area: I really cannot recommend Cat Ba to anyone except those taking a cruise.
Accessibility: step to get into shower, elevator not working to get down to ground floor but can go up from it.
Value: Low for Vietnam but at par for Catba