A studio is a calendar first
Your clients do not browse. They want a time on Thursday evening. Put the booking block near the top of the Mini App and list each service with its length and price: a sixty-minute massage, a drop-in class, an intro session. Set the availability to the hours you actually work, and leave buffers between appointments so you are never late for the next one.
Describe each service honestly
Say what happens, who it is for and what to bring. A first-timer booking a yoga class wants to know whether mats are provided and how early to arrive. Two lines in the service answer that for everyone, and the question stops arriving at 11 at night.
Products on the side
The same Mini App can hold a small shop: massage oil, candles, a mat, a tea blend. Keep it short. A studio that sells five things it uses in the room sells more of them than one that lists fifty. Clients can collect what they ordered at their next visit, which you confirm in chat.
Gift cards and packs
Gift cards are one of the content blocks and they suit wellness well: a session is a common present. If you sell class packs, list them as products and keep track of visits in your own records; say clearly on the page how the pack is used.
Use the channel for the timetable
Post the week's schedule every Sunday in your channel. With the scheduler module that post can go out on its own, every week at the same time, with a button to book. The ready-made designs include wellness looks with soft palettes if you want to start from one.