My fiance and I stayed at Fir's for 2 nights and considering the fact that the building is still brand new, everything was great! Fir is a great host and he's very accomodating. We had an issue with the hot water on the first night, however, he quickly fixed the issue the next day.
There's street parking but Fir offers $20/night for garage parking (which we did). This place is in Downtown which is the perfect location because it's close to everything!
Overall, we would definitely come back whenever we're in SD again.