We booked Stay Alfred on Fannin Street. We got there after a 10 hour flight, and spent 30 mins trying to get our key from the digital box. After giving up and giving the Stay Alfred team a call, we found out we had been moved to another building on Caroline St (just a few blocks away). This was very frustrating as we had had no notice of this, except when we logged into the app. No email, no calls. Disappointing.
At Caroline St., the apartment was good enough. However, downstair neighbour frequently banged against the ceiling with a broom, when our kids walked around. Granted, kids can "stomp" a bit. Also, upstairs neighbour was a bit loud during the weekend (I didn't use my broom, tho :-D). The building seemed to generally suffer from not having proper sound insulation.
Other than that, the apartment was pretty good. Clean and spacious. If it hadn't been for the above fail from Stay Alfred in relocating us with no real notice and the neighbours, it would recommend it. It's a different, but interesting approach especially with kids (beats being stuck in hotel rooms)