I have had at one point, 3 males and 1 female, one male intact, none of them ever marked in the house.
I found my males to be rather doofy, but very velcroey as in touchy feely velcroey
while my females were velcro, but in a different way,,they knew/know where I am at all times and didn't have to be 'on top ' of me to know where I was..make sense?
Neutering is up to you, I neutered two males later in life, both around 3 years of age. The other two, I did early just under a year.
I have found my females to be much more 'protective' if that's the word to use, of "me", probably more like 'possessive', of me, than my males. Not that my males 'loved' everyone, a couple did, a couple were very aloof, my females much more aloof than most of my males.
It's not a "bad" thing to have a friendly puppy, in fact you want a friendly puppy, this gives them confidence , not all dogs are going to instinctively protect their owners, looks and a bark are always a good deterrent