Plenty of room in the house for our three families with young children. The kitchen was well stocked with dishes, pots/pans/utensils, food storage, cooking oil, and salt/pepper, and the bagged coffee was a nice touch. Lots of fun options in the pantry like an old-school popcorn popper, baking sheets, etc (which we didn't end up using). We brought our own Brita pitcher and bottled water; the fridge water dispenser was very slow. Extra folding chairs/table in the master closet in case you need more seating or a table. Stocked games/activities closet for any kind of boredom, and a welcome basket and treats were provided. Bathrooms each had hand soap, lotion, and body wash. We sledded down the steep street/driveway with our own sleds which was so fun for the kids. Tons of extra blankets and pillows for snuggling on the couches too. The garage had snowshoes and a couple of well-used foam sleds. We did not end up using the deck or firepit since it was so cold but would have if it were spring/summer. The carousel and little shopping area is a short walk away and the kids loved the carousel and little puppet-theater nook upstairs. We didn't explore much further than that. Overall, two nights felt like plenty of time for us unless you plan to go to RMNP or something.
Communication with the property management company was spotty; I texted questions and got a response 7-8 hours later (or never). We also were given the wrong keylock code so we couldn't get into the house until they figured it out and sent us a new code (which is not fun with freezing wind and snow...). They responded quickly to us being locked out so I'm not sure if they just decide how important the questions are before responding, or if the reception delays the messages??? It would also have been helpful to have explicit check-out instructions emailed (like whether to strip the beds, put all of the used towels in one place, run the dishwasher, etc). The gusty wind also meant the street and driveway quickly got covered multiple times with about a foot of snow so we spent a lot of time shoveling and it took our SUVs 4-5 tries to actually get up the hill to park the car. Rear back to build speed and gun up the hill. It's probably fine when there isn't snow.