Yes, you can use Soi 4 entrance 24 hours. Last summer, there was a thread about ways to walk between Soi 2 and  Soi 4,  and I posted a pic of the Soi 4 driveway that leads to the Lohas garage. Click on my name in the link below to read the thread.  Like I said, when you need a taxi or motorbike to travel somewhere, use Soi 4. When you return to the hotel in a taxi, tell the driver to go to Soi 2 entrance because there is almost no traffic on 2, particularly late at night. Conversely, there are no taxis or motorbike stands on Soi 2.  If you enjoy Benchakiti Park, the hotel has bicycles for guests to use in the park. They're nothing fancy, just standard city bikes that are common in large cities.Those are also found in the parking garage.     

Thank you very much, gentlemen,  @shaved_penis79  and  @oliver17 for your replies. Since I have VIP status on Agoda, I benefited from a good rate for this hotel, and strangely enough, my usual hotels were much more expensive. Go figure! So I booked a 45m2 luxury room at a good price, as the reviews for this hotel were quite good.   @oliver17   you mentioned there's an exit on Soi 4, which is very interesting for me because I enjoy walking in the park, and of course, I'd have direct access to the restaurants and bars on Soi 4. That's great news! I assume we can also use Soi 4 to get back to the hotel, alone or with others? The hotel is far from the noise, on a quiet street; it's perfect for relaxing. Thanks again.

If you're a regular traveller and like Accor hotels then the Accor Plus membership is a good option. It's been refreshed recently and the main benefit is if you book two nights or more, you can get one night free (the most expensive night). You get two of these, plus 15% off above your usual member rate, discounts on dining (never used) and higher status which can give you late check-out options. I've used it to book a few nights at the Sofitel for the first time to end my upcoming trip (I'm curious to see how it compares to the Hyatt). I've found that Accor Plus has more than paid for itself, but of course you need to run your own numbers to see if it benefits you. 

I have stayed there a few times over the years, most recently last August.  It is 100% LB friendly and there is no guest charge, just ensure that your advance reservation is for two guests. Any security guards you see will just smile and wave at you and your LB. It has entrances on both Soi 2 and Soi 4. Soi 2 entrance is the lobby and Soi 4 entrance is through a small parking garage. The smart move is always depart the hotel thru the Soi 4 entrance and then return through the Soi 2 entrance. Soi 2 has very little traffic compared to Soi 4 and if you utilize taxis or tuk tuks, it is much faster using 2.  They have a large rooftop pool that has no shadows and there are always plenty of loungers available. If you walk across the skybridge to the other hotel tower, you will find a nice rooftop garden that attracts loads of hummingbirds. It's a pleasant surprise and a real gem.  I have never tried their restaurant, but a couple of minutes away on Soi 4 are Swan and the Dawin hotel's restaurant, both of them modest but outstanding places that punch above their weight. The Dawin's restaurant is directly across the street from Why Not, so while you eat your dinner you can check out the available girls at WN.  It's not fancy, but it is spotlessly clean, quiet and the rooms are large. It's good value for the money, less expensive than similar hotels like Adelphi Suites but its location is on the periphery of the red light district and the LB bars take a bit more time to travel to. 

Nope ... directly on https://all.accor.com