Here are relaxing boutique-style options that work well as a “last stop” before/after flights at Bandaranaike International Airport (CMB), with quick notes on why they’re good for a short, restful stay, approximate transfer times to the airport, and booking tips.

Top picks

1. The Wallawwa — Negombo (boutique manor house, very close to the airport)

• Why: Historic colonial manor converted into a peaceful boutique hotel set in gardens with a pool, spa and acclaimed dining — great for unwinding after a long flight.
• Distance / transfer: Around 10–20 minutes by car from CMB (Negombo area). (ROFI.lk)
• Good for: Overnight transit stays, spa treatment, quiet garden/pool time.
• Tip: Ask the hotel about airport pickup/dropoff (many Negombo hotels offer transfers) and confirm check-in/late-check-out policies.

2. Paradise Road / Tintagel Colombo (central Colombo boutique)

• Why: Iconic boutique hotel in a converted colonial residence with individually styled rooms, calm public spaces and wellness options — comfortable and characterful for a short city stop.
• Distance / transfer: ~35–50 minutes to CMB by car depending on traffic. (OnlyBoutiqueHotels.com)
• Good for: Stylish comfort, a relaxed evening in the city if you have more time before departure.
• Tip: If you’re on a tight schedule consider daytime traffic windows; request an airport transfer so timing is predictable.

3. Nyne Hotels Lake Lodge (small boutique in central Colombo)

• Why: Small, peaceful boutique with a focused, intimate feel — good if you want a quieter base in the city without big-hotel bustle.
• Distance / transfer: ≈35–50 minutes by car from CMB (varies with traffic). (roughguides.com)
• Good for: A restful night and easy access to Colombo sights if you want a short stroll before leaving.

4. Day‑use / transit-friendly hotels in Colombo (various boutique and hybrid options)

• Why: If you need just a few hours to shower, nap and recharge between flights, several Colombo hotels offer day‑use rooms or short-stay packages (6–10 hours). Examples and listings of day‑use options are available via local day‑use guides.
• Distance / transfer: Varies — some central hotels are 30–45 minutes from the airport; Negombo options are quickest. (DayDreamHub.com)
• Tip: Search “day‑use” plus the hotel name, or use day‑use booking sites to reserve guaranteed short-stay rooms and confirm whether the hotel will provide airport transfers.

How to choose between them

• Want the shortest transfer time and a resort-like unwind? Choose The Wallawwa / Negombo-area boutique. (ROFI.lk)
• Want a stylish city stay with boutique character? Choose Paradise Road Tintagel or Nyne Lake Lodge in Colombo. (OnlyBoutiqueHotels.com)
• Only need a few hours between flights? Look for day‑use rooms in Colombo or near Negombo and book the block (6–10 hr) in advance. (DayDreamHub.com)

Quick booking checklist

• Confirm transfer: request/confirm airport pickup and approximate travel time (traffic in Colombo can be heavy at peak hours).
• Verify check‑in/out or day‑use hours and whether late check‑out is possible.
• Ask about luggage storage if you want to explore before/after the room.
• Compare rates on the hotel website + booking engines and check cancellation terms.

If you’d like, I can:

• Find live availability and current rates for 1–3 of these hotels for specific dates, or
• Narrow choices to your preferences (closest to airport, pool/spa, or best value).