I stayed at the carriage house loft (2nd floor) for a month when I first moved to Denver and was still looking for a permanent place to live. Communication with Marianne was quick and easy and her listing and her handbook is very transparent about the noises you might expect to hear. It was a bit creepy the first night but I easily got used to them after a couple of days.
The loft was clean, amenities were great, and you will pretty much have everything you need in the space. The bed was super comfortable. Heat and air-conditioning worked well - I had to switch back and forth due to the finicky Colorado weather. Keep in mind that you will need to go up a flight of stairs though so consider that if you're bringing a big luggage. The front door is a glass door which took a bit of getting used to - security and privacy-wise but otherwise it wasn't a big deal. The neighborhood is amazing - quiet, safe, and walkable.
I had a great experience living here for a month - an awesome introduction to Denver and the LoHi neighborhood. Thanks, Marianne!