Leveling off concrete slab after plumbing repair

[jnw]

A while ago the plumbers had to cut a 2 foot x 2 foot section out of my concrete slab to access pipes for a repair.   They poured concrete in but didn't level it off.  What is the best way to level this off with the rest of the concrete slab?  I have been procrastinating and been walking on concrete for past several months.   I'd like to get some new ceramic tile down.

What do you think of self leveling concrete?  The depth of the recess is about 1/2" or so.  Or is there something else I should use?  Any advice would be much appreciated thanks!

[Fishindude]

A 1/2" dip like that can be easily filled with some "thin patch" material commonly available at most lumber yards, just talk to the guys at the contractors counter.
Assuming the rest of the slab is in good shape, screed it off level with a straight edge such as a 2x4 and finish the top surface smooth with a concrete trowel.   Lay tile after it sets up, per the instructions.

[phildonnia]

I had exactly this situation. 

The plumber knew I was a DIY'er, and suggested that they put some rough concrete in the hole, and let the amateurs finish the job. 

I got some "thin patch" from the hardware store (also called "floor leveler") and followed the instructions on the bag. 

Before you get started, chip off any bits of concrete that extend higher than the edge of the hole, using a mallet and a screwdriver.  You also need to practice "feathering" the edge; basically scraping the surface gradually around the edge, so it doesn't make a hard line.