Is there a extra charge for dogs?

There's a charge

Yes, of course, everyone now charges for pets.

yes

Yes. I was also told there is a 35lb weight limit. Was able to sneak my 75lb lab in though.

There is normally a $10 per night pet fee. They usually put pets on the first floor if you let them know ahead of time.

Yes, it's expensive, and they might try to add on extra cleaning charges.

Yep.