My wife, friend and I are all divers and chose the Eco house 3 for our first visit to Bonaire. We used Flamingo Diving, who came to the villa the night we arrived and set us up with park passes, weights, and delivered tanks daily to our door. This location was perfect for us!
The entrance to The Lake dive spot is next door South (walking with tanks and weights were no problem for us) and we even reached the Hilma Hooker (surprisingly) one day when diving right from our Villa. Our neighbors (also divers) to the North did enter the water right in front of their villa, but it's iron shore and pretty rocky, so we'd just walk down to the marked site entrance just pass the neighbors house on the South. We saw a lot of people snorkeling here as well. If it's your first time and you'll be diving here, get nice very solid soled dive boots. We had basic dive boots with thick rubber and neoprene which worked fine, but walking over the broken coral beach and iron shore with tanks and weights, you feel every little rock, etc. had sore feet by end of week.
This location is the middle in a series of 3 similar properties, but we felt (after seeing and talking with neighbors on both sides) that Eco 3 is the best out of the 3 for divers. There's rinse tanks on the side of the house with hooks to hang all your gear. Plus, a driveway down to the rinse area for backing your truck down for loading and unloading (even though we only drove to 2 other dive sites all week - Angel City & Alice in Wonderland as we dove The Lake from our villa the entire time).
Hayte was an AMAZING host. Left us a phone to use for local calls. There was bottled water, some chips, beer, wine already in the fridge when we got there. We hit up the grocery store the second day for supplies and grilled out a few nights and really enjoyed it.
They did spray for mosquito's before we got there, and the wind was really nice the first 3 days so mosquito's weren't much of an issue. Later in the week the wind died down and it was really, really hot and mosquito's were out a bit more. But Hayte provided us with some spray that really helped and we had deet and Sawyer picaridin lotion that worked well. Even the locals said it was uncharacteristically hot the last few days without much wind. But if you completely open up the entire house, the winds come through and keep it pretty cool. And with AC's in the rooms (we had the upper North master room) with the AC directly on our bed it was great.