Recs Needed4 Days of Twinset Tech Diving in Malta/Gozo: Shops & Lodging?

Hi everyone,

I'm planning a short, intense 4-day diving trip to Malta/Gozo at the end of June / early July.

I am a certified technical diver and I plan to dive in a twinset configuration.For these 4 days, I want to experience a mix of everything the islands have to offer: some deep historical wrecks and some beautiful caverns/topography.

I would love to get your advice on a few things:

Malta vs. Gozo:For a short 4-day trip focused on twinset diving (preferably shore-based/infantry where possible to keep logistics flexible), which island makes more sense to base ourselves?
Dive Center Recommendations:Which shops are currently the best equipped for twinset rentals and solid tech logistics?
Accommodation & Location:Where is the best area to stay so my partner can enjoy her time while I'm underwater, without needing a rental car if possible? Any specific recommendations for apartments, lodges, or farmhouses close to the tech shops?

Thanks in advance for your help and safe dives!