Mika Mizu was the perfect place for our stay in Hilo. It was close to the Falls at Reed's Island, where my sister and her family stayed. The cottage had every amenity we needed, including a washer and dryer (with laundry soap and dryer sheets), and a propane grill. The hosts even provided a welcome basket with kona coffee and local snacks.
Although the cottage was literally in the rainforest, it was only a short drive to town. We found the Safeway had fairly reasonable prices for groceries and wine. There was also a Target and Walmart nearby, as well as a mall (Tip - try the freshly made malasadas at Zippy's Neapolitan Bakery in the food court of the mall - yum!!!).
We had beautiful weather the week we stayed, so we didn't actually spend much time in the cottage, other than sleeping, but we did appreciate the library of books and DVDs. The guidebooks for Hawaii were especially helpful in planning our day trips. Our adventures included visiting Volcanoes National Park, Rainbow Falls, Boiling Pots, Akaka Falls, the Black Sand Beach, the Green Sand Beach, snorkeling in some tide pools, swimming in a "warm" pool, and driving to/from Kona to attend a Luau via Saddle Road.
Our only "complaint" would be the lack of fine dining in the Hilo vicinity. The night before my sister's wedding, we went to dinner at the Hilo Bay Cafe, and were a bit disappointed with the service and the food. Ken's Pancake House actually provided the best meals and at fairly reasonable prices, but it's not really the kind of place you'd go to for a rehearsal dinner.
Overall, we had a wonderful vacation and if we ever went back to Hilo, we wouldn't hesitate to stay in Mika Mizu again!