The area advertises short meetings, longer sessions with massage included and close-treatment offers, of the kind listed as a girlfriend experience. Some escorts add companionship for a night out or a dinner beyond the neighborhood. Every ad sets out what it offers and what it doesn't, and that list is the only reference that counts.
On the venue, besides her house there's the option of her travelling to your address or to a hotel in another area, something used quite a lot here because this isn't a hotel district. If that's your preference, raise it at the start of the conversation: not everyone works with outcalls and it's best to know straight away.
Contact is made directly from the profile: you look at the photos, the hours and the terms posted, and write on WhatsApp with no middleman at all. It's best to be specific from the outset, with day, approximate time and format, because that way the reply comes fast and with the information you need to decide whether to go ahead or keep looking.
Every slot in the day has its advantage. With the workshops going, between trucks loading and people coming and going, one more car means nothing to anyone. Later, when there's no movement left, there's simply nobody watching. Choose whichever suits you best and get it agreed, because her being available depends on it.