My husband and I took our first trip to Maui in January. We did a TON of research and almost splurged on an expensive hotel, like the Westin or the Hyatt. It seemed like the management really cared as to the reviews left on tripadvisor.
We are sooooo glad we did not waste our money at one of the more "luxurious" hotels! We wouldn't have even been able to have an oceanview room! But at the Mahana, we had an AWESOME view! Our room was great - VERY close to the ocean! Upon arrival we thought we would be in a studio, but they put us in a newly renovated 1-br suite. Everything in our room was just great! The carpets, tile, kitchen cabinets and appliances, etc. were all fairly new (updated that year) and in great condition. Nice decor, very clean, fully equipped, nice lanai, large living-room area, large windows, all comforts of home.
They were doing a little construction work while we were there (like most hotels in Maui!) but it never bothered us and it was always during the day while most people were not around.
Right across the street (behind the hotel) is a plaza with some shops and eateries.
Being the season for whale-watching, I saw whales every single day of our trip from our hotel room - it was amazing! Saw more than on our whale-watching tour!
The beach, like many others say, is not the greatest for swimming right in front of the hotel but we wanted to explore different beaches anyway, so for us, it was not a problem. We did walk often on the beach in front of the Mahana, but our favorite beaches were: Wailea (note: go to the beach right in front of the Grand Wailea - even if you don't stay there, you can use their charis and no one will mind!), Ka'anapali (in front of Westin area) and Big Beach (this is a public beach and we didn't swim there, but it's a great golden-sand beach with an awesome cliff that you can climb - one of the best views in Maui!)
Although the pool area is small and simple, it was nice and quiet and not too crowded.
Our favorite things: Warren & Annabelle's Magic Show, Old Lahaina Luau, whale-watching (Ultimate Whale Watch), and sunrise at Haleakala (we drove and almost didn't do it twice, but once we did, we were glad! it is well worth it!)
We didn't care too much for the food in Maui, but found some great places to eat: BJ's Pizzeria in Lahaina, Compadres Mexican, and Ruth's Chris. DO NOT go to Giovanni's near the Mahana - it was TERRIBLE and a waste of money (although they did have a good greek salad).
If you want more of a resort, this is not the place for you - no restaurants, shops, huge pools w'slides, etc.
In short, we would definitely go back to the Mahana! Don't feel the need to do as much research as we did - trust me, you will not be unhappy!