I recently moved to Barcelona with my gf and two dogs and we are considering starting our real estate journey with our first investment property either in Barcelona or Valencia.

They have already called a real estate agent to list on the MLS and when the agent comes over to take the listing, they tell the prospective seller that the dog poop in the living room has got to go.The rot in the bathroom behind the toilet needs to be fixed.

Allowing pets, including the dogs nobody wants (excluding pitbulls, unless your landlord policy specifically covers them), will give you access to qualified tenants that otherwise can't find places that allow them. 

@Duarte MarquesPossibly but highly not recommendedFor those with no real estate experience or experience in taking on debt, it’s not easyTo do it also with little to no down payment or reserves in most occasions will end in disasterReminds me of when in high school a friend used to let his dog drive his car.

I don't care what kind of business it is, STR, Hot Dog stand, any biz I am NOT paying 8X annual gross revenues, no flippin way! 

I’m just starting out as a bird dog, so I’m always keeping an eye out for distressed properties that could work for BRRRR, whether SFH or multifamily.

I have two dogs, but I have always been a wandering spirit.

Get a dog there.

You can also start by being a "bird dog" and finding off market deals.

Otherwise, it's like a good dog and walks itself.You might consider handling the lease portion yourself to alleviate that portion of the stress.