Some logistics:
It's a 45 min drive from the airport to Westpunt. I think that would be over $100 via cab, I don't believe LKH will pick you up. I did see a mention once of a shuttle to Willemstad so guests could shop but it might be the employee shuttle Damselfish mentioned - there's also a
Hotel Kura Hulanda downtown.
Plus if you're comfortable enough after your cert dives, there's about a dozen shore dive sites within a few miles of LKH - most are beach entries with onsite dive facilities. Tank rentals are around $10-12 vs. most of $100 for boat dives. More than once we saw a dive boat tied up on the mooring at a site we were shore diving.
The Lodge has a restaurant with ocean views. There's also a snack bar down near the dive operation - good for lunch between dives.
Here's why you might want a car - the Lodge is kind of separated from the other restaurants mentioned since it's waterfront on sort of a point. I remember driving by Jaanchies once - the Lodge was 5-10? mins. drive from there. I personally would not want to walk that far. All the places we've mentioned can be found on Google Maps afaik. Rancho El Sobrino is almost across the street from Jaanchies - I don't recall where Landhus Misje is although we went by it once.
If you want to walk to things, re-consider Lions Dive. That would be about a $40 cab ride from the airport but there's restaurants within walking distance including all the ones at
Mambo Beach Boulevard, the place where urban meets the sea!
Plus LD has a free shuttle to downtown Willemstad for dozens more. Bistro De Clochard is kind of pricey but has great harbor views of the Swinging Bridge which they light at night.