years ago, we had a tiny kitchen and we spent an absolute fortune buying an ariston washer/dryer “it didn’t go on and on”, it was jolly expensive to run, and it didn’t dry OR it dried everything to a crisp and you couldn’t iron it!
a few years ago, I saw a hoover washer/dryer, and I thought they must have moved on £500 paid, dishwasher moved to the tumble dryer place, it lasted 2years! It took four hours to dry stuff!!
I don’t often use a drier, we have an outdoor line in a lean to, I like to put towels, flannels etc to get them fluffy, but unless it’s really cold I don’t use them.
My advice is buy the biggest washer you can get, we have a 14kg one, and buy a 12litre dehumidifier from Lidl for £70, I have a very small 3kg compact must be over 50 years old tumble dryer in the cellar, for the towels and real real emergencies niw.