Questions & Answers about Мне хочется кофе без сахара.
In хочется, -ся helps form an impersonal structure meaning “to feel like / to have an urge.” It’s not reflexive in the “I wash myself” sense here. Compare:
- Я хочу кофе = “I want coffee” (straightforward)
- Мне хочется кофе = “I feel like coffee” (more like a craving or inclination)