Question about Intex Whirlpool PureSpa Jet & Bubble Deluxe Massage

I've been using the wirepool for about 2 weeks, it's just under 2x2m, I bought a 3x3m popup pavilion with 2 windows and walls (zipper) as doors, everything is on simple concrete slabs (filled with pebbles underneath). I am satisfied so far, it keeps the temperature very well, I will use it over the winter!