Excellent  
    
 Based on 67 reviews 
 
 
  
 
 
 
 
 
 
 
 
  
 
 
 
  
 
 
 Dan F (danf) 
 
2025-11-28
 
 
 Trustindex verifies that the original source of the review is Google. 
I’ve been training with Gui for a few months now, and I can honestly say he’s the best I’ve worked with. He’s super patient—never makes you feel rushed or pressured. Between sets, he gives you a solid break so you can catch your breath and recover properly, instead of just blasting through the workout like a drill sergeant.
What I love most is his chill, no-stress vibe. He’s all about moving at a pace that keeps you safe and injury-free, not pushing crazy heavy weights just to show off. It makes every session feel sustainable and actually enjoyable. If you want results without burning out or hurting yourself, Gui’s your guy. Highly recommend!
  
 
  
 
 
 
  
 
 
 Katherine Sanchez 
 
2025-11-26
 
 
 Trustindex verifies that the original source of the review is Google. 
Absolutely outstanding personal trainer!

I trained with Guille for several weeks and I couldn’t be happier with the experience. 😊
As someone who has never been a gym lover, I was honestly nervous at the beginning but Guille completely changed that for me, His explanations are clear, his sessions are well-structured, and he always makes sure you understand the “why” behind each exercise.

What I appreciated the most is how patient, motivating, and attentive he is.
He adapts the workouts to your level without ever making you feel overwhelmed and somehow he turns training into something enjoyable instead of a torture session. 😅
I’ve gained confidence, strength, and a genuine interest in fitness thanks to him. 💪

If you’re looking for a trainer who is knowledgeable, supportive, and truly committed to your progress, Guille is the one.
Highly recommended and absolutely worth booking! 💯
  
 
  
 
 
 
  
 
 
 William Ogusco 
 
2025-11-13
 
 
 Trustindex verifies that the original source of the review is Google. 
Hands down the best one in town!
  
 
  
 
 
 
  
 
 
 Taymara Martiniano 
 
2025-10-15
 
 
 Trustindex verifies that the original source of the review is Google. 
I trained with Gui a few years ago and came back in March this year — so glad I did!
I originally just wanted to change my body, but Gui helped shift my whole mindset around fitness, sleep, diet, and overall lifestyle.

Gui is a great professional — high qualified, passionate, and always sharing, inspiring, and supporting throughout the process, and his gym has everything you need, and the vibe is always motivating.
Highly recommend Gui if you’re after real results and a coach who truly cares!
  
 
  
 
 
 
  
 
 
 Tiago Klausberger 
 
2025-10-14
 
 
 Trustindex verifies that the original source of the review is Google. 
Skull Gym is top-notch with brand-new, high-tech equipment that truly stands out. Gui has an incredible work ethic and a broad knowledge of fitness and nutrition. He adapts seamlessly to individual needs, delivering outstanding results. I can personally attest to the excellent outcomes from his technical and dedicated approach. Highly recommended!
  
 
  
 
 
 
  
 
 
 Muriela Arradi 
 
2025-10-09
 
 
 Trustindex verifies that the original source of the review is Google. 
I’ve been training with Gui and honestly, he’s amazing! He makes every session enjoyable and really motivates me to push myself. I’ve been feeling stronger, more confident, and I actually look forward to going to the gym now. His positive energy is contagious and he genuinely cares about helping you reach your goals. Highly recommend!
  
 
  
 
 
 
  
 
 
 Aaron Lee 
 
2025-10-03
 
 
 Trustindex verifies that the original source of the review is Google. 
Great person to help you train. Very peculiar about form and warming up correct. Extremely knowledgeable in all aspects including nutrition
  
 
  
 
 
 
  
 
 
 Ingrid Mendonça Barbosa Ingrid 
 
2025-09-01
 
 
 Trustindex verifies that the original source of the review is Google. 
Training at Skull Gym has been a really positive experience. The workouts are well-structured, adapted to my pace, and always explained clearly. The atmosphere is motivating and friendly, which makes it easier to stay consistent. I’ve already noticed progress and feel stronger and more confident every week. 💪🏻
  
 
  
 
 
 
  
 
 
 Vanessa Gonçalves 
 
2025-09-01
 
 
 Trustindex verifies that the original source of the review is Google. 
Guilherme is very knowledgeable and always pushes me to do better. He truly cares about your progress and always shares great tips for a healthier lifestyle.
  
 
  
 
 
 
  
 
 
 Jaqueline Amine 
 
2025-08-25
 
 
 Trustindex verifies that the original source of the review is Google. 
I recommend Gui with my eyes closed!

He truly brought back my motivation to take care of my body, mind, and soul.
Training with him is not just about lifting weights, it is about learning, technique, planning, and smart strategies to reach the best results. And on top of that, he even becomes emotional support hahaha.

An amazing professional who has already become my inspiration!
Without a doubt, one of the best investments I have made in recent times. Worth every second!