Hi Idohair2 and welcome to the Mattress Underground 
Great that you had a relaxing sleep on the Beautyrest mattress at the air bnb! As you probably know, any mattress you choose will be based on your Stats (height, BMI, sleeping position(s) & any underlying health issues and you PPP (Posture & alignment, Pressure relief, and Personal preferences). You can also take a look at the Mattress Specifications You Need To Know compared to the Mattress Durability Guidelines to see how certain materials will last over time.
Replicating a mattress can often be a frustrating experience, unless you can find the exact specifications of each of the layers. Beautyrest, like most of the ‘big brands’ are not transparent in the details of their components, listing no density and sometimes, not even the thickness of their lsyers; as there foam is of a proprietary formula, there’s no way to assess the suitability of durability for any consumer with these. Memory foam, if it’s of insufficient density of inexpensive ‘filler’ is used, can break down prematurely, leaving ‘ridges’, ‘valleys’ or worn ‘sagging’ areas. A few ‘good nights’ of rest doesn’t really tell you much - except that your current mattress may be in bad shape where any half decent mattress will feel comfortable. We recommend any foam in a potential mattress has no more than an inch or so of lower grade foams (for memory foam no lower than 4 lbs/cuft for normal range weights, and 5lbs/cuft for higher range weights) and if polyfoam is used, with at least 1.8 lbs/cuft density, just to ensure you have support you are looking for a memory foam hybrid mattress, many of the Trusted Members of the site offer a variety of foam hybrids, with full transparency in construction, layer density and thickness…by providing them with you Stats, PPP and mattress history, they can help you to find a sleep solution based on your own body profile, and they also have generous return and exchange policies. This can take a lot of the guesswork out of shopping for a new mattress. If you can give us your Stats and any specific mattresses you are looking for, we can possibly comment on their suitability.
~ Basilio