Steps up to hotels, tiny cramped toilets, narrow doors and dysfunctional lifts are the norm outside of three-star-and-up hotels in Manila, Cebu and a handful of larger provincial cities. The same goes for restaurants, although mall restaurants tend to be more accessible.
Boarding any form of public or rural transport is likely to be fraught with difficulty.
On the other hand, most Filipinos are more than willing to lend a helping hand, and the cost of hiring a taxi for a day, and possibly an assistant as well, is not excessive.
Some resources for disabled persons travelling to the Philippines:
Disability Rights UK (http://disabilityrightsuk.org)
Mobility International USA (www.miusa.org)
National Council on Disability Affairs (http://www.ncda.gov.ph)
Society for Accessible Travel & Hospitality (SATH; www.sath.org)
Download Lonely Planet's free Accessible Travel guide from http://lptravel.to/AccessibleTravel.