Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: how big is the water tank?
Document: The machine has a good Size and price. On the downside it has a small water tank. Mine was broken in less than a month. Replacement machine was not sent conveniently fast enough.
After breaking the water tank (didn't take much) on my machine I contacted DeLonghi for a replacement, they were kind enough to offer to send one to me free, they said it would take 7-10 days, that was on January 20th. Two weeks later & I still do not have my water tank.
either. Everything they said about the coffee from the look, the taste, the simplicity is really good. The milk capsule has a froth that last longer than any shop I've ever bought coffee from. And it has thee prettiest layers of milk, coffee and froth I've ever seen. It is programmed to only make's 8-9oz cup at a time with a small water tank on the back.
I like this coffeemaker.Easy to install and to handle. Especially the "scroll" to choose the water quantity is very helpful. So you can not only make your "standard" coffee with the suggestions given for each kind of coffee (latte, espresso, longho, cappuccino....) but give more or less water to fit your own taste. Also easy to clean. The coffee choice is (until now? )not so big but for me it's enough.
In my pre-coffee stupor in the morning, the water tank slipped from my hand as I was filling it, and the edge of the tank hit a corner on the counter. A fairly prominent crack formed, causing water to leak. The machine was still usable, but I had to hold it over the sink. After a quick search for replacement tanks came up empty, I emailed customer service and explained my situation.
The shape and size is perfect for under our cabinet and it fits nicely in the corner. It's a wonderful space saver. The water tank is a good size for the two of us. If we have company, no worries cause this machine brews fast and our guests can choose what pod they want to brew.Downside is I can't find these pods in the store...not even Walmart. So I order them online through Walmart and Amazon. Sign up for the rewards on Nescafe Dolce Gusto website.
The chai tea is my favorite flavor now. You will probably want to add your own sweetener to the other flavors. They may say the milk cup is sweetened but it's far from sweet in my opinion. The water tank holds enough for two drinks before you refill. The temperature is hot enough that you need to slowly sip first but I've never burned my mouth. The reviews that say its not hot enough either like scalding water or had defective machine or used water in the tank that was colder than recommended.
I got the machine and they have not bothered to include one single coffee capsule with it!!!! and the capsule can only found on line!!!! Big big mistake to buy this product....
Today, the new tank arrived; from all appearances, it is a new part, not refurbished.So, between the convenience factor of the capsule system, the tastiness of the beverages, and the A+ customer service, I would not hesitate to recommend the Dolce Gusto Genio to someone looking for a capsule/pod-based system.
We bought this for our Bed and Breakfast. It is simple to use and makes decent coffee. But... to fill a normal sized cup takes 2 cartridges. We also bought some of the mocha packets. They take 4 cartridges to fill a regular cup.Still it doesn't make a big mess and that is what we wanted.
Answer: This unit has a small footprint. The water tank sits snuggly in the back. Filled to the Max line, it holds 24 fl. Ounces.