Planned to stay for 3 nights, ended up staying 5!
We had to switch rooms twice, but the staff did the moving for us and it really wasn't a big deal. The staff were super friendly and very helpful. Joshua helped us decide how we would spend our time in Tulum with great advice on Tulum and its' surrounds.
The hotel itself is lovely - gorgeous garden with lots of palms, fern and hanging vines. Lots of space to lounge about in a hammock or day bed. We preferred the rooms over the bungalows. The rooms have aircon (good for reducing the amount of mozzies in the room) and a separate day bed for reading and relaxing. The bungalows would be better for families - they have basic cooking facilities and a loft bed.
The staff go to a lot of effort to make the most of their facilities. While the finishings aren't 5 star, which you wouldn't except for the price, there are loads of towels provided, candles, incense, bottled water, toiletries, cute stone floored shower (even if the water pressure is lacking), cushions and freshly painted rooms.
Good location if you're interested in eating cheap, local food. We hired bikes (100 each/ 24 hours) for the days we planned to do a few things - the ruins, cenote etc. And took a taxi (140 pesos return) on the days we planned to spend all day by the beach.
The 'tacos el pastor' on the main strip around the corner are incredible! ADO bus station 5 mins walk. And the vegetarian restaurant on the main strip near the lights on the left when heading out of town towards the ruins is amazing! 25 pesos fresh juices! I think it's called 'a la vegetariana'.
All in all Secret Garden was a great option! If spending 5 nights in Tulum, I would spend the first few at Secret Garden and then the remainder at a spot on the beach for a bit of a mix.