Great — here are 10 off‑beat, romantic honeymoon places in Sri Lanka (boutique, eco, remote or unusual), with a short note about what makes each special and who it’s best for. I’ve included sources so you can check availability, exact rates and recent reviews before booking.

1. Diyabubula — The Barberyn Art & Jungle Hideaway (near Dambulla)

• Why go: Tiny artistic hideaway (only a few villas) set in an imaginative water‑garden and jungle — very private, highly photogenic and calm. Perfect for couples who want an intimate, artsy escape close to the Cultural Triangle. (en.wikipedia.org)

2. Jetwing Vil Uyana (Sigiriya)

• Why go: An award‑winning eco‑lodge built across recreated wetlands and paddy habitats — private pavilions, wildlife on your doorstep and strong sustainability credentials. Great for nature lovers who want eco‑luxury near Sigiriya. (en.wikipedia.org)

3. Uga Ulagalla (Thirappane / Cultural Triangle)

• Why go: Converted manor with private pool villas that sit among rice paddies and gardens; feels like a secluded country estate. Ideal for couples wanting privacy, romance and easy access to cultural sites. (tikalanka.com)

4. Karpaha Sands (Kalkudah / East Coast)

• Why go: Luxury tented suites on a quieter stretch of the east coast — barefoot romance, big skies, excellent stargazing and a true “off‑the‑beaten” beach vibe. Best for adventurous couples who don’t mind a longer trip for seclusion. (thehotelguru.com)

5. Uga Chena Huts (near Yala National Park)

• Why go: Beach + wild safari combination — rustic, romantic huts between the ocean and Yala’s forests, where you can combine turtle/sea and elephant/safari experiences. Great for couples who want wildlife and shoreline in one trip. (thehotelguru.com)

6. Gal Oya Lodge (Gal Oya / east inland)

• Why go: Remote lodge by Sri Lanka’s largest reservoir — boat safaris with the rare chance to see swimming elephants and very private bungalows with big views. Ideal for couples seeking dramatic, off‑grid wildlife and tranquillity. (transindus.co.uk)

7. Dolphin Beach Resort (Kalpitiya)

• Why go: Low‑key eco beach resort on a peninsula famous for dolphins and kiteboarding; relaxed tents/rooms and a strong community feel. Good for active couples who want sea life and water sports. (en.wikipedia.org)

8. Abode by the Beach / boutique beach houses (Ahangama / Weligama area)

• Why go: Very small, design‑forward seaside boltholes with floor‑to‑ceiling ocean views and intimate service — much quieter than large beachfront hotels. Perfect for couples who want chic minimalism and sunsets. (thehotelguru.com)

9. Eraeliya Villas & Gardens (near Weligama)

• Why go: Quiet villa complex with generous suites, private spaces and a homely-grown romantic atmosphere — good balance of boutique comfort and local character. Good for relaxed food-and‑beach honeymoons. (thehotelguru.com)

10. Saman Villas (Bentota)

• Why go: One of Sri Lanka’s original boutique hotels (Geoffrey Bawa influence), small, tropical and very romantic with private pools and attentive service — classic, elegant seaside honeymoon choice. (en.wikipedia.org)

How to pick the right one (quick tips)

• If you want wildlife + beach: Uga Chena Huts (Yala) or Gal Oya Lodge.
• If you want eco‑luxury and privacy near Sigiriya/Cultural Triangle: Jetwing Vil Uyana or Uga Ulagalla.
• If you want an artsy, intimate hideaway: Diyabubula.
• If you want a quiet, design beach bolthole: Abode by the Beach, Eraeliya or Saman Villas.
• If you want water‑sports + dolphins: Kalpitiya (Dolphin Beach).

Practicalities

• Getting around: Domestic flights (Colombo ↔ east or north airports) shorten travel times; otherwise hire a private car/driver for island transfers — many couples combine 2–3 different regions (Cultural Triangle + South Coast or East Coast + Yala).
• Best seasons: South and west coast & Cultural Triangle — December to April; East Coast (Kalkudah/Karpaha Sands) — May to September. (Check exact dates for monsoon patterns when you book.)
• Book early for private villas and peak‑season dates; confirm cancellation policies and any travel/visa rules before travel.

Would you like me to:

• shortlist 2–3 of these based on whether you prefer beach, jungle, wildlife or culture?
• check rates/availability for specific dates? (I can look those up.)