We strongly believe you should crate train your new puppy. The crate becomes their safe zone and security blanket. It will also come in handy later if you travel to hotels, family members' homes, or need to kennel or overnight at the vets. Start right away with this to make it part of their normal life. You can use treats (toss a few into the crate) to encourage them to enter the crate without drama until they want to just go in without encouragement.
We have been very happy with Midwest double door crates. 36 or 40 inch will last the lifetime of your Doodle - larger than 40 will provide sleeping and eating/play area, but consider the crate with attached playpen as a better alternative. A cloth crate cover will make it feel even more comforting to them. We line these with a matching size crate liner.
We have also used the cloth Elite crates, which are good, but you do run the risk of a puppy chewing through and destroying it.
There are also great crates that look like furniture that are an alternative if they are in your budget.
Etsy.com has gorgeous cloth crate covers and high end, hand built furniture dog crates worthy of being a family heirloom!