Converting a 3 season porch to 4 season porch reno cost (specifically labour)

Hello,

My wife hired someone we know to do a bunch of renos on our home using money from her parent's estate. We did not get multiple quotes, as we assumed since it was a friend we would get a good deal. I don't know, but part of me thinks we paid too much. I'm looking to get other's opinions that are in the reno business to give their opinion on how much this project should cost. I've attached before and after photos.

We live in Ottawa and the project here is the conversion of a three season porch to a four season one. The room is 6.5 feet x 12 feet in size. We bought the large window , tiles, two ceiling lights, and door separately ourselves. So I'm only concerned with the labour cost to demo the old structure and install the new one including miscellaneous building materials (i.e. grout, baseboard, trim, drywall). The electrical was reused from the existing porch, so no electrical work was needed. They insulated the ceiling, floor, and the wall with the large window and exterior door. The other walls are not exterior. The wall with the window had to be completely reframed as the old wood was rotten and the new window was much larger than the the old screen that was there before. There was a false door on the one end of the porch (seen as the glass door with no handle in the old photos) that was removed. As a result the wall on the other side of the false door had to be repaired and refinished. The original floor was supported on deck posts and the new one is using the same deck posts so no work was needed there. We haven't had any issues with frost heaving. The exterior siding was removed and replaced with wood as seen in the photos. If anyone can provide a idea of what the labour cost for a reno like this would be it would be greatly appreciated.

Thanks