Yes, Antique White USA is a bit dated, and it used to be the go-to colour for anybody painting a rental property. Tired, cliched and your painter has probably done a hundred homes with Antique White USA. Don't listen to your tradesmen when making your selections. I would be looking at an off-white with a slight green undertone to soften the terracotta and provide more balance. Keep the green undertone subtle and understated. Get paint samples of the following Dulux neutrals to see how they work against your terracotta tiles : hog bristle, hog bristle half, buff it, buff it half. Best of luck, Dr Retro of Dr Retro House Calls

In Australia we have rules and regulations regarding waterproofing wet areas. Did you know that you had posted your query on Houzz Australia? Best of luck, Dr Retro of Dr Retro House

The size of floor tile: 300 x 300 mm and the size of wall tile: 300 x 600mm The floor tile and wall tile do not align at all. It looks unprofessional. Should the tiler redo the job? Thanks for your advice.

you can't go wrong with the basic black white grey and timber and the most cost saving ideas we use is to replace all the fixtures in the same location, check out mid range RAM taps, basic handles eg black steel or brushed chrome D handles are timeless and cheap, research all your local hardware, tile and plumbing suppliers for sale items in vanities and tiles and make that the beginning to match everything to those but first measure the spaces to know the quantities and sizes you need...do you have a plumber, tiler, waterproofer, electrician and carpenter already arranged as tradespeople will often be able to recommned suppliers and/or include their trade discounts but pick one feature lightfitting (we use old faithful paper lanterns!!) eg for an entry foyer or dining area and keep all the other lights very basic although we recently found some great pendants on sale ...best of luck with your reno