Hi Nigel! No, they are different churches. While they are in the same city, Manila, they are quite a distance from each other.

It's 10 min walk from the nearest LRT stop, direction already mentioned by Combat66. Another option if you are in Makati is you go to Park Square which is just in front of Dusit Hotel, in Park Square there are vans to almost every part of Metro Manila, alternatively you can take a jeepney (also starts at Park square) to Libertad there you can take another jeepney to Binondo (chinatown).I really dont suggest LRT it is not as comfortable as in Bangkok and tends to be congested. Have a great stay here in the Philippines

I do not see empty space inside the church... before you enter inside there's one big cross and across to it was a store where u can buy some oil, rosaries, booklets and many more. It was 12 noon when we went there so I stand beside San Lorenzo Ruiz Statue and saw every corner in it. It was such a beautiful church and I like the octagonal design made, the facade was very nice and you will love the altar of the church. I suggest you will visit binondo church so that you will see the difference.