We arrived pretty late at Mariana's place and she accommodated us nicely even if we arrived in the middle of the week. The place was as described and the living room/bedroom area is pretty small but still remains functional and had everything that we needed. In terms of location, we rented the place to be in close proximity to Hanalei and to head out early for Kalalau trail and this was about 30 min by car, so a good spot. It also about 5 min by car to a Foodland where you can stock up on food. The limited interactions we had during our stay with Mariana and her husband were nice. A very minor downside with the studio is that it is located right next to the garage where they store a motorbike and when the windows and doors are open we could smell an odour of gasoline.
For the upside, I would recommend the place without hesitating for a couple looking for a calm place to visit the northern part of the Kaui!