I’ve always had our sitter stay in my home, including overnight, while I travel. As each of mine aged and faced the usual changes and challenges, staying in their own home, where everything is set up for their comfort and safety, made our being gone much easier. No adjustment to an new environment meant less stress.
Of even more importance, I am 10 minutes from an outstanding clinic with 24/7 ICU care - and there have been several times when the sitter had to respond to an emergency while caring for them. In an emergency I want my dogs to go to my vet not to a stranger who does not know their history.
The added bonus is that the house is not empty - there is a measure of security.
The sitter and I agree on how much time during the day she will be away from the home, this varies with the needs of the dogs at the time. If there is a time when the dogs cannot be left at all, I need to hire a second person to come over for a few hours each day, so that the sitter has some time for herself.
My sitter has retired and is not taking on new clients, unfortunately. (She still helps me out, to the limits of her ability, out of kindness.)
I have been searching for a replacement for a good ten years - it is not a common form of sitting service, and I tend to have dogs with special needs on top of that. Recently someone contacted me via Petsitting24 who offers this, but her coverage area is a long way from you. However, if you put an ad in Petsitting24 describing what you need, who knows, you may find someone in your area.
https://petsitting24.ch/en/
If you live in a holiday or tourism area, you might have more luck finding someone, by the way.
Be aware that prices for this kind of sitting will be high. You are paying for 24 hours minus the X hours you agree the sitter will be free. At typical Swiss hourly rates…
In other threads some EF pet owners have recommended Trusted Housesitters. This is a swap where people looking for holiday accomodation in Switzerland stay at your place, in exchange for caring for your pet. This would never work for me because of the level of care mine need, but it seems to have been a good solution for other owners. You can search for those posts, perhaps contact those EFers who have used this service for more information.
Hope you find the care that best fits your dog’s needs.