Great — here are luxury private‑pool villa options in Sri Lanka, organized by region with sample properties, typical price ranges, best time to visit each coast, and quick booking tips.

Summary of regions & season

• South & Southwest coast (Galle, Unawatuna, Mirissa, Weligama, Tangalle): peak season November–April (best for whale‑watching, beaches).
• East coast (Trincomalee, Pasikuda, Arugam Bay): best May–October when the east has calmer seas.
• Cultural & Central lowlands (Anuradhapura/Polonnaruwa area, Sigiriya by villas/resorts): year‑round, drier Dec–Mar is most comfortable.
  Sources on seasonality and region trends: travel/resort pages cited below. (Anantara.com)

Top luxury villas / resorts with private pools (examples you can book) (Prices are indicative per night and change with season — check dates.)

South & Southwest coast

1. Cape Weligama — Two‑ to three‑bedroom villas with private pools; cliff‑top, ocean views (Weligama / Matara). Premium resort villa rates typically several hundred to >USD 1,000/night for multi‑bedroom villas. (theaustralian.com.au)
2. Tangalle private beachfront villas — large beachfront estates with private pools (examples listed on villa rental sites; multi‑bedroom villas USD ~2,200–3,900/night depending on season for large estates). Good for groups/families. (villagetaways.com)
3. Kahanda Kanda — hillside luxury property near Galle with individually designed villas; some suites/villas include private pools. Known for design, food and quiet privacy. (thetimes.co.uk)

West / Southwest resorts with private pool villas 4) Anantara Peace Haven Tangalle Resort — garden, ocean and beach pool villas (plunge pools and private villa hosts). Rates often mid‑ to high‑hundreds to thousands USD depending on villa type. (Anantara.com)

East coast & Trincomalee / Pasikuda 5) Uga Bay / Uga Escapes (Pasikuda) — Beach Villa options include private plunge pools and direct beach access (good for east coast calm months). (ugaescapes.com)
6) Uga Jungle Beach / cluster private pool villas (Trincomalee area) — private pool villas and cluster cabins for groups. Best in May–October for east coast. (ugaescapes.com)

Cultural / Inland private‑pool villas 7) Ulagalla — private pool villas in a quiet paddy/garden setting near Anuradhapura / cultural triangle; intimate one‑bed and two‑bed pool villas. Good for adding cultural excursions. (ugaescapes.com)

Independent villa rentals (large groups / private estate options) 8) Villa Getaways / luxury villa marketplaces — list many private beachfront and estate villas (Tangalle, Mirissa, Galle) with pools, 3–7+ bedrooms; nightly ranges vary widely by villa and season. Use reputable villa rental agencies for contracts and local support. (villagetaways.com)

What to expect (amenities & service)

• Private plunge/infinity pools, dedicated villa host or butler, private chefs or in‑villa dining, airport transfers, curated excursions (whale watching, surf lessons, temple tours). Check whether pools are heated (most are not) and whether a villa host is included. Resort villas often include extra services such as villa host and child amenities. (Anantara.com)

Booking & practical tips

• Book early for November–April on the southwest coast and May–October for the east coast (peak season and holiday periods sell out).
• Confirm inclusion of taxes, service charges, transfers, and whether pool maintenance/cleaning is daily.
• If you want whale watching (Mirissa) or surf (Weligama/Arugam Bay), coordinate dates with local season windows.
• Consider booking through either official resort websites (Uga Escapes, Anantara) or reputable villa platforms (VillaGetaways, local luxury villa agents) and ask for a cancellation policy and local emergency contact. (ugaescapes.com)

If you want, I can:

• Search available villas for specific dates and your preferred region (south, east, or central) and compile 6–10 current options with nightly rates and booking links; or
• Suggest an itinerary (e.g., 7–10 day Sri Lanka private‑villa trip with a few nights in Galle/Tangalle + cultural triangle) and estimate costs.

Which would you like me to do next — the date(s) and region you prefer will let me pull current availability and prices.