We ended up staying an additional 3 nights. The hotel rooms were great and the restaurant is really good. Standard super-friendly and efficient Filipino staff.
We took taxi's once or twice, but mostly walked around to Camp John Hay, the Botanical Gardens, SM Mall, Burnham Park (ok a bit of a hike...), Wright Park, and others.
While you're there, go visit the Igorot Stone Kingdom, it was excellent!