My husband and I did the bioluminescent tour in December. We don't like crowded tours, packed boats and party boats. Nicole (I believe she owns the business) was excellent: great communication skills, very responsive before the tour, knowledgeable about the subject, pleasant, and professional. She provided exactly the experience we wanted. She also followed COVID related protocols and wore a face masks the entire tour. Nicole's boat was really nice; looked pretty new and bigger than what I expected since her tours are limited to 6 people. Even though it was a Saturday in December, because of COVID, there were only 2 other boats in the bay, which made for a nice QUIET experience without crowds and people screaming. Even if you are staying in San Juan, it is worth driving to La Parguera.
If you are not into party boats and crowds, Nicole is your person.
Because of COVID, we did not want anyone else on our tour; so she arranged that for us and the price was reasonable. If you want a private tour, just give her a call (and expect to pay more).