WapReview

Search for and book rooms using your stored Hotels.com billing profile or by manually entering credit card details. Listings include street address, description, user reviews, hotel photo gallery, map, neighborhood guide and click to call Hotels.com number.

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Search and book rooms at hotels in 15,000 destinations worldwide. Many user hotel reviews.  Booking is by credit card.  Large pages and a dependence on JavaScript for some functions will break this site on most feature phones.  Some usability isssues including broken links on the FAQ page and phone numers that are not click to call. Source Oh! Mobile Directory

I like using Priceline.com for booking hotels. It's an "opaque" auction site where you bid for a room by minimum star rating, city and district. You don't find out the name of the hotel until you submit a wining bid. I gotten some great deals over the years using Priceline, the LA Omni for $50/night and both the Hyatt Regency and Marriott Pinnacle in Vancouver, BC for $60/night. Of course you don't usually get such a good price, but I find I can be consistently get a room for 20% less than the best online price. Priceline also has bidding for flights and car rentals although I never much luck with either of those. But for hotels it's hard to beat. There are a lot of tricks to getting the best price from Priceline. I highly recommend that you study the information on BiddingForTravel, a message board for Priceline users, before you place your first bid.

Priceline has taken a rather tentative step into the mobile web at priceline.mobi. Strangely, it's missing what Priceline is best known for - bidding for heavily discounted flights, car rentals and lodging. There are links to Zagat and a few airline mobile flight status pages, but the only thing you can do on Priceline Mobile is search for available hotel rooms. You enter a destination city or airport code and the dates you wish to book and receive a list of available properties with prices and star ratings. To book a room you have call Priceline using a click to call link. The prices don't seem to be special, being similar to other travel sites like Travelocity. The mobile site isn't very robust either, searches frequently return an error saying "Sorry. Your browser didn't understand where you were trying to go". Retrying usually works though.

Find and book hotels and resorts. primarily in Spain with this well designed and usable site. Listings include description, list of amenities photos, street and email address. maps and direct to hotel click to call phone numbers.

Hotel search and booking service. Many listings for Western Europe and China but relatively few for the US and Japan. Nice menu driven UI. Results sortable by price star rating or "distance to central station". The site is German but has the option for English listings (some German words creep into the English pages but English-only readers should be able to understand.) You can request a booking, the hotel will call you back on your mobile if a room is available.

Getaway is a new hotel search engine, primarily for South Africa but with some listings for other African countries and for India. 

Listings include a photo, description and the hotel's phone number and email. While the listings are useful, it might be hard to actually find or even contact the hotels as they  don't include a street address and the phone numbers and email addresses are plain text rather than click-to-call or mailto: links.

It's such a simple thing for web designers to make a phone number and email clickable.  No fancy back-end scripting is required, just a link:

<a href="tel:1-800-555-1212">1-800-555-1212</a>
<a href="mailto:[email protected]">[email protected]</a>

Granted, "tel:" and :mailto: are not supported by all phones and there is an alternate click to call format that some older phones require . But tel:or mailto: do work on most modern handsets and including them shouldn't break anything on the ones that don't. Making the phone number or email address clickable improves usability immensely and creates a simple but effective call to action that will help drive  business to the target. Source: Oh! Mobile Directory

This Kiwi Collection has nothing to do with New Zealand.  It's a Vancouver based online guide to guide to luxury hotels around the world.  Room rates at listed establishments run from a few hundred to several thousand dollars a night.  I'm more of a budget travel myself but some of these places do look very nice indeed.

The mobile web version of the Kiwi Collection offers searchable listings which include descriptions, reviews, photos, click to call phone numbers and a list of awards and recognitions received by each hotel. An advanced search form lets you filter results by interest (honeymoon, adventure, golf, etc.), setting (beach, mountain, city...), style (historical, "camp", western...) and property type (castle, chateau, ranch, etc.).  Unfortunately, my search for a campy, mountain, golf castle did not return any results.

The Kiwi Collection's desktop site lets you check availability and book online using a credit card.  The mobile site's booking options are limited to a form for emailing a reservation request or inquiry to the hotels you are interested in. I can see forgoing online booking on the mobile site but it would be nice to be able to check availability before contacting a hotel. Source: mobility.mobi

Apr-2011: A recent redesign seems to have broken mobile browser detection. Only  iPhone and Android users are seeing the mobile site. Lesser browsers get the desktop version!

Feb-2012: Loads a blank page in the Android Gingerbread and Firefox Mobile browsers. Serves a non-mobile page to Opera Mobile and Mini

Lodging.mobi is the latest in a number of new mobile hotel search and reservation sites to launch this year. Nice to see this long neglected area of the mobile web finally getting some attention. The well designed site has an inventory of over 75,000 hotels around the world.  It uses browser detection and adaptation to deliver page and images sizes optimized for six different classes of device and should be usable on virtually any phone.

The user interface is straight forward with the search form leading directly to a list of available rooms sorted by price from lowest to highest. Prices listed are room rates only, taxes and fees are not included.

Making a reservation requires a credit card and filling out a long form. In this initial release it doesn't appear to be possible to store your credit card details for future use or complete a reservation over the phone. Source: Mobility.mobi

19-Feb-2013: "Temporarily closed for renovations"!