I have two small dogs and we're planning on a 2 weeks vacation was wanting to understand more what house sitting and the pricing.
It depends on the sitter because each sitter sets his/her own rates. If they have a discounted rate for additional dogs, you will see it when you click on "Additional Services and Rates."
Rover defines house sitting as the sitter comes to your home to provide pet care. Each "night" would be good for up to 24 hours of care. However, once again, each sitter sets his/her services, so it is best to ask each potential sitter what they provide in terms of staying overnight, number of walks, etc. Keep in mind that some sitters will have other commitments for pet care during the day. They may take other dogs for walks or check up on others. They won't be staying 24/7 in your home but they should be spending a majority of time in it taking care of your dogs and home. Remember house sitting should be considered a premium-type service because the sitter is not only taking car of your pets but also your home. The lower the cost, the less service you should expect and even an a la carte approach to care, i.e., paying additional for walks, etc.
The best thing to do is communicate your expectations with the sitters you interview.