I am a 30-something female that traveled to Vegas alone for work and I stayed at Antonio's for 2 nights.
Pros: MANY! The week before I stayed with Antonio I stayed at the MGM Grand. I enjoyed Antonio's place more. There was COFFEE! There was none at the MGM. The room is large and spacious. There was plenty of space to store my clothes. The TV is legit. There is a mini-fridge. The furniture is sheek. I worked the whole time so I didn't get to enjoy the outdoor space Antonio's place has to offer. That included an pool, a t-pee, a cabana like bed to relax. It was easy to check-into, and walking distance (6-8 blocks) to a shopping plaza that has fast food and stores. The bathroom is a modest, but you aren't coming to Vegas for a bathroom... unless you are... then you should find the biggest-badasses-bathroom Vegas has to offer, and this wouldn't be it. :)
Cons: Seriously, I can't think of any. Antonio was prompt in replying to messages and the space suited my needs very well. In fact, I wanted to delay my trip back home for a day just to enjoy the space, but I couldn't.