I've stayed at Susan and Nick's before.
They are just lovely - kind, thoughtful and easy-going. Without any fuss they accommodated some unexpected flight changes which was appreciated ... and a relief.
The apartment is quaint and very clean and just like photos (though ... some of the furniture in the living room has since change). It has it's own entrance and stairs; I felt I had complete privacy and total autonomy the entire time I was there. Plenty of hot water and good wifi. It's really a comfy welcoming space for a single traveller or a couple.
The neighbourhood is great as well - right on a big square with baseball diamonds, a kid's pool and tennis courts. Walking around you get a neighbourhood vibe. It is a vibrant neighbourhood. Lots of art galleries, some very good restaurants, bars and breweries and minutes away are the North Loop and downtown.
I'd have no second thoughts about staying a third time.