Here are Colombo hotels that commonly offer family suites and/or connecting/adjoining rooms (useful for families wanting space and separate bathrooms). I’ve listed each property with the evidence/source and a short note about what to ask for when booking.

1. NH Collection Colombo (formerly Mövenpick) — offers suites and explicitly lists “connecting rooms available” for Executive/Junior/Executive Suite types. (nh-Hotels.com)

   • Good for families: junior & executive suites, extra beds/cribs possible.

2. Cinnamon Grand Colombo — large property with family offers and some suites showing connecting/adjoining room availability on hotel listings. (Cinnamon’s family packages and room inventory include suites and multi-room options.) (cinnamonhotels.com)

3. Shangri‑La Colombo — 5-star property with multiple suites; large international chain that can normally arrange suites/connecting rooms on request (check available room map & family packages when booking). (en.wikipedia.org)

4. Hilton Colombo (Hilton/DoubleTree properties in Colombo area) — major chain hotels in Colombo commonly offer family suites and can arrange adjoining/connecting rooms on request (availability varies by property). Check the specific Colombo Hilton property for connecting-room inventory. (Expedia.com)

5. Fairway Colombo — listed by major booking sites as offering connecting rooms and family-friendly room types. Good mid/upper-range choice. (Expedia.co.in)

6. Cinnamon Lakeside Colombo — sister property to Cinnamon Grand; large hotel with suites and multi-room/family options (contact for confirmed connecting rooms). (cinnamonhotels.com)

Notes and booking tips (important)

• “Connecting” or “adjoining” rooms are often available but not always guaranteed by third‑party sites. Ask for a confirmed connecting-room allocation and a room number block, or request a written confirmation from the hotel. Expedia/Hotels.com listings for many Colombo hotels explicitly show “Connecting/adjoining rooms available,” but that usually means the hotel can provide them on request or when inventory allows. (Expedia.com)
• If you need guaranteed adjoining access (important with young kids), consider booking a 2‑bedroom/family suite where available (e.g., executive/junior suites or Presidential/Family suites) rather than two individual rooms. Listings for NH Collection and Cinnamon show suite options sized for families. (nh-Hotels.com)
• Best practice: (1) book directly with the hotel or a reputable chain website, (2) call/email the hotel after booking to reconfirm you need connecting rooms and ask them to note the reservation, and (3) request reconfirmation 24–48 hours before arrival.

If you want, I can:

• check availability and show prices for specific dates (I’ll need your travel dates), or
• make a short list of family-suite options with sample nightly rates and links to the hotels’ family-suite pages.