I've been to the other Loving Hut in HCMC (located in Tan Binh District)and one in Hanoi and neither of them were particularly great experiences, but fortunately I had visited this branch first so knew that not all Loving Huts in Vietnam were disappointing.
I was unaware of the opening times and arrived at 13:45 - 15 minutes before they were due to close. I apologised for being late and told them that I was still expecting 2 other people and that I'd just call them and we'd go somewhere else but the staff were SO kind and patient and insisted that it was okay to wait for them and that they could still take our orders. I found that very accommodating and they really went out of their way to provide great service, even though they weren't supposed to be working then.
The place itself is very spacious and definitely more elegant than the other 2 branches I've been to. The menu is very extensive, so it was hard just picking one dish. I had the pho with mock beef and my parents had the sushi and a rice dish - we all enjoyed our food and agreed we'd come back. I've yet to go back but plan on doing so soon as there is so much on the menu to try out and I've heard the desserts there are good :-)Pros: Great, attentive, staff, Extensive menu, Veg shop upstairs
Cons: Possibly a bit hard to find