We had a great time staying at the condo aside from some problems with the downstairs commode, which, was eventually fixed. The condo was perfect for us with one bedroom upstairs and the other downstairs. One drawback was that the downstairs bedroom did get pretty warm, as it was the farthest from the a/c unit and unless you keep your door open, there is no airflow (there are floor fans which help somewhat.) The beds were adequate, but not exactly comfortable (think budget hotel quality.) Kitchen is equipped for very minimal preparation and storage. The pool is lovely, though we never made it over there!
I've been to Maui many times over the years and in my opinion the location is great for Kihei. It is behind a local grocery store and close to a restaurants (don't miss the fish tacos at Coconuts!) and shops where you can rent mopeds or electric bikes, the post office drug store and a dive shop are all within a block or two and the beach access is right off the street at the back of the property. This is a big plus because you don't have to cross the busy street in order to get to the beach. Just grab your gear and walk right to the beach! The condo is equipped with some gear, which is great because you don't have to buy beach towels or bring gear from home - though I didn't see any snorkeling gear. It is an upstairs unit which I didn't realize, so if that is an issue, you may want to see if there is a ground floor option.
The owner was very helpful and she left a roll of quarters for the washer/dryer, which is in its own little room on the ground floor. The laundry room is shared by 4 units. It wasn't a problem at all. I hope this helps when planning for your trip!