For DIY bathroom renovations to save money it is possible to tile over existing tiles. You will need to score the tiles with an emery stone to give them a key. Then use a single part flexible powder adhesive as buckets of adhesive will provide sufficient adhesion. It will then be necessary to install a timber baton to the wall to provide a level line to then work up from. When tiling over tiles, things to look out for are architrave details around windows and door frames, the space behind the bath taps to ensure you can still operate them. You also need to set out the room to ensure the vertical and horizontal grout joints leave good sized cuts when the tiling reaches sanitary ware or floor and ceiling lines.

It'd depend on the state of the bathroom and budget, would try to DIY a "refresh" but employ professional help for a complete revamp.

It does look really lovely :) but I think it’s a great space and wouldn’t be difficult to make this lovely. Nice choice of furnishings and kitchen and table etc but I can’t see 75 grands worth of refurb.

I suggest finding a nice local carpenter to help with cabinets etc. They will be able to come up with imaginative ways of upgrading and using as much of your own things as possible. I had an ok but boring Magnet kitchen with laminate doors. I wanted new doors and after spending an entire morning in the local franchise of Dream Doors, they eventually refused to come out and look at my kitchen when I said that my budget was under £5k. I priced up new doors online and then found a local carpenter. When he came round, I explained what I wanted and that my real dream was to have an “in-frame” look. He laughed, told me to scrap my ideas of buying new doors and instead he made entire new fronts that look a million times better than anything I could get off the shelf. It was also a fraction of the price!! My kitchen isn’t perfect (i find it too dark. - but that’s another story and not to do with the carpenter!!) - however it’s high quality, completely bespoke and an absolute bargain! Here’s my before and after....