Help please+advice on tile grouting in new bathroom

[allthefives]

Hi all! As an ordinary customer (not professional tiler!) am I glad to have found this forum! Some advice please :- we are having new bathroom installed; it's almost finished, white tiles on floor and walls, except for one which is mosaic tiled. It's a kind of cross between a wet room and a walk-in shower; have a shower screen but not having a bath installed.

Anyway, shower part went in about two weeks ago and work proceeding round it. I am doing best to keep it clean bearing in mind that I am very pleased with it and work is still continuing as we are having upstairs and downstairs toilets done too.

The bathroom guy suggested using a squeegee for the floor and a shower spray to keep it nice. I have been using Lakeland daily Shower Cleaner and also Lakeland Scrub Free. however I've noticed that grouting is starting to get discoloured/slightly limescaled. I've tried Viakal and scrubbing with an old toothbrush without any joy, and was wondering about scrubbing grouting with neat bleach next but it seems too soon after installation to start with this.

Any advice please? Thanks so much.

 

[allthefives]

Here are some photos. Hard to tell from photos but the tiles are brilliant white. The last photo shows the bit of grouting where the builder redid the join using the Dunlop grout to show us.

Funnily enough the grouting on the mosaic wall (not pictured is fine) DH and I think that this is because it is shades of bright blue and it 'distracts the eye' if you understand me.

Is there some sort of white tile paint or coating to go over the grouting?

Once again, thanks soooo much everyone for your help.