An Extra Lock for a Hotel or Airbnb Door
A portable door lock adds a second, mechanical block on a door that opens inward: a steel plate sits in the strike and a claw grips behind the latch, so the door cannot open even with a working key or card. Fit is the deciding factor, not strength.
The short answer
Fit the Addalock Original Portable Door Lock as directed on any inward opening door with a standard latch gap, and test it from inside before you rely on it for the night. Traveller reports are consistent on the mechanism: fitted correctly, the door does not open, even for someone with a key. This page will not dress the record up with a rating it could not confirm on a retailer listing, and it states the fit limits up front, because misfit, not weakness, is how this product fails.
Why does this happen?
Hotel and rental doors are secure against strangers and open by design to a small group of others: card holders, cleaners, hosts, and anyone a previous guest copied a key for. A traveller who wants the door closed to everyone but themselves needs a block that works from the inside and answers no key at all. A portable lock provides that block mechanically, wedging the latch in its strike so the door cannot swing, which is why it works without batteries, apps, or any cooperation from the door hardware beyond a standard latch.
The same mechanism explains its limits, which come down to shape and fit. The door must open inward, because the block resists inward swing. It needs a latch and strike with a gap the plate can occupy; some modern doors, outward opening doors, and doors with unusual closers or tight seals give the plate nowhere to sit. Strength is almost never the reported problem, because a steel plate loaded in its plane is strong. Fit is the thing that varies, and it can only be settled on the actual door, which is why testing on arrival, in daylight, is part of using one well.
The fix, in order
Each step costs more than the one before it, so stop at the first one that solves the problem; the product is there only if the free steps run out.
Free step
Check the door type on arrival
Confirm the door opens inward, has an ordinary latch and strike, and closes with a small even gap. Look at the strike plate and test the plate fit before unpacking the rest of your evening. This free check, done in daylight, is the difference between a lock that works tonight and a purchase that never fitted this trip.
Free step
Practice the fit at home before the trip
Fit and remove the lock on a door at home several times until the motion is familiar, then repeat the exit test with your eyes half closed. Travel gear that is first used in a strange corridor at midnight is likely to fluster you; the lock itself is usually fine. Practice is the free step that makes the product routine to use.
The product step
Fit the Addalock on the room door and test from inside
Slot the plate into the strike, close the door over it, and set the claw into place behind the latch. Pull the door firmly from inside to feel it stop, then remove and refit it once. The Addalock earns its place in the bag on this test, repeated on every new door, because each door fits or does not fit on its own.
The product for this step
Addalock Original Portable Door Lock
Habit step
Pair it with ordinary door habits
Use the room safe or your own judgement for valuables, keep the key card out of sight, and use the door viewer before opening to a knock you did not arrange. A portable lock closes one route into the room; the habits close the other routes, the ones no hardware can touch.
The evidence, in tiers
Tier 1 · The method
The mechanism is verifiable without any rating at all: a steel plate seated in the strike with a claw behind the latch blocks inward swing as a matter of geometry, and it either fits a given door and works, or does not fit and cannot be used. That distinction, tested or untested, door by door, is the honest way to judge this class.
Tier 2 · This product
Roundup reports for the Addalock describe a large body of traveller ratings, but the figures could not be confirmed on a retailer record, so no rating is printed as fact. What could be confirmed was the mechanism itself and consistent field reports from travellers using it on hotel and rental doors.
We have not travelled with this lock for this guide. The fitting and exit testing method follows the maker instructions and the mechanism described above.
Tier 3 · What owners report
Travellers report the either-or pattern the mechanism predicts: doors that fit it feel completely secure and the lock becomes permanent travel kit, and doors that do not fit it, outward opening, unusual latches, tight modern seals, are reported at once. Strength failures are notably absent from the reports; fit failures account for nearly all of them.
The alternatives, conceded where they win
| Option | What it is | The honest verdict |
|---|---|---|
| Addalock Original Portable Door Lock | Portable plate and claw lock for inward doors | The pick: a mechanical block that answers no key, small enough to live in a wash bag, provided the door fit test passes. |
| A rubber door wedge | Friction wedge pushed under the door | Wins on price and on carpeted floors where it grips well, and needs no latch fit at all; it loses on hard floors, where a determined push can work a wedge loose, and on doors with a large under door gap. |
| A door bar or brace | Bar braced between handle and floor | Wins on raw resistance and on doors a plate lock cannot fit, bracing the handle itself; it loses on pack size, setup time, and discretion, where the portable lock is a pocket item fitted in seconds. |
The honest price comparison
The honest comparison is the cost of the alternatives for the same peace of mind: choosing hotels by security features alone, or paying for higher grade rooms and rentals across a year of travel. A single portable lock, carried trip after trip, costs less than one night of that upgrade and works in ordinary rooms.
Where it falls short
The weaknesses below come from the product's own review record. Hiding them would make this an advertisement, so they are here.
- It only fits inward opening doors with a compatible latch and gap, so a share of real doors, especially modern and outward opening ones, will refuse it completely.
- Its rating could not be confirmed on a retailer record for this page, so unlike most picks here it asks for trust in the mechanism and in traveller reports rather than in a verified score.
- It must never slow an emergency exit: anyone who cannot remove it instantly in the dark, including a traveling companion, is a reason to leave it off that night.
The product, in short
Addalock Original Portable Door Lock
Questions people ask next
Will it work on an Airbnb door?
If the door opens inward and has a standard latch and strike, generally yes, subject to the house rules, which vary and should be checked. Fit and test it on arrival in daylight, and remove it without trace when you leave, as you would expect a guest to.
Can someone open the door from outside with a key?
Not while the lock is correctly fitted: the claw blocks the latch in its strike, so turning a key or a card does not free the door to swing. Not answering to a key at all is the entire reason travellers carry one.
What if the door opens outward?
Then this class cannot help you, because the block works against inward swing. A wedge or brace faces the same physics in reverse. For outward opening room doors, rely on the fitted lock, the chain if present, and ordinary habits.
Is it allowed in hotels?
Rules vary by property and by country, and some restrict anything fitted to a door. Check the property terms, use it only where permitted, and be ready to show that it removes in seconds and leaves no mark, which settles most front desk concerns.
Addalock maker product description and fitting instructions · Traveller roundup reports on portable door locks, ratings unconfirmed on a retailer record
The Fix JournalCase 25Family & Friction