I think that’s ok, if I can get a nice unit in the Maldives. Is the resort nice or is it less than stellar?
From the Trip Advisor info I read (had to look up if it had a house reef or not), slightly below the level as Filitheyo resort. Meaning it's OK. Filitheyo is about 4.5 stars rating on TA (I'd consider it a 4* Maldives resort, maybe a little less) only because it's a little more "rustic" on the accommodations. But perfectly nice and above average. Medhufushi gets 4* ( on TA). I'd give it about a 3.5 * (Maldivian standards--LOL).
I'm not sure what the other fees are (Assuming you could get the exchange for a week, would the cost for food/beverages plus the 23% taxes be "a deal" or not).
To contrast, we got 6 nights on Vilamendhoo in a jacuzzi beach villa with AI for $3,500 for mid-April. An extra night would've only been about another $500 or so. this is for 2 people and includes the Seaplane transfers.