Almost perfect.
We come to Denver a couple of times a year to visit our daughter at DU and love checking out different areas and this apartment hit on pretty much everything one could want.
The location is incredible. It is within walking distance of pretty much anything you could want. Casual bars/dining, upscale farm-to-table dining, a grocery store, local dispensaries and area attractions (like the botanical gardens) and a short drive/uber away from pretty much everything else (we even uber'd to Red Rocks for a concert one night at a reasonable price).
The space is nicely decorated plus has thoughtful touches like books (subject/style runs the gamut so there is something for everyone), games to play if you need to stay in (e.g. exploding kittens and cards against humanity) and snacks set out for us upon our arrival. And despite being a basement apartment, it was surprisingly quiet (we live in a single family home and generally prefer completely detached Air BnBs for this exact reason).
The only reason I chose not to give 5 stars is I thought the beds were uncomfortable. They are firm, futon style mattresses and I just could not get a good nights rest on the beds. I realize this is very much personal preference and my wife who generally prefers pillow tops slept fine. Maybe it was just me and this specific trip, so despite this one item, I am not saying I wouldn't pick this place again because again, it was almost perfect.