Homes for extraordinary families
At The Onsider, we offer a unique residential concept designed by Jaime Beriestain, where you can enjoy exclusive amenities such as a pool, sauna, gym, and barbecue area, open year-round. Once you arrive, let us take care of everything so you can relax and enjoy an unforgettable experience in Barcelona.
Aribau 306 is located in one of Barcelona’s best neighborhoods, Sant Gervasi, close to international schools and major business hubs like Diagonal, Paseo de Gracia, and other important avenues.
Discover our apartments
3 bedrooms

3 bedrooms
Located in the heart of Sant Gervasi and designed by the renowned Jaime Beriestain, this modern 140m2 apartment is a haven of elegance and comfort, perfect for enjoying with your loved ones.
€8.000
/ month (minium stay of 32 days)
x5
140m
1 double
/ 2 single
/ 2 single
x1
x1
x1
Located in the heart of Sant Gervasi and designed by the renowned Jaime Beriestain, this modern 140m2 apartment is a haven of elegance and comfort, perfect for enjoying with your loved ones.
4 Bedrooms

4 Bedrooms
Situated in the prestigious upper neighborhood of Sant Gervasi and designed by the renowned Jaime Beriestain, this modern 140m2 apartment is a heaven of elegance and comfort.
€9.000
/ month (minium stay of 32 days)
x6
140m
2 doube
/ 1 single
/ 1 single
x1
x1
x1
Situated in the prestigious upper neighborhood of Sant Gervasi and designed by the renowned Jaime Beriestain, this modern 140m2 apartment is a heaven of elegance and comfort.
4 Bedrooms Premium

4 Bedrooms Premium
This sophisticated 140m2 apartment with distinguished, premium high-quality furniture and exquisite design by Jaime Beriestain, is located in the prestigious Sant Gervasi neighborhood, in the exclusive upper area of Barcelona.
€10.000
/ month (minium stay of 32 days)
x6m
140m
2 double
/ 1 single
/ 1 single
x1
x1
x1
This sophisticated 140m2 apartment with distinguished, premium high-quality furniture and exquisite design by Jaime Beriestain, is located in the prestigious Sant Gervasi neighborhood, in the exclusive upper area of Barcelona.
The Patio

The Patio
Stunning 220m2 duplex located in the heart of Sant Gervasi, offering three double bedrooms, three elegant bathrooms (one en suite), a charming terrace, and an exclusive private pool for enjoying moments of relaxation and memorable dinners.
€12.500
/ month (minium stay of 32 days)
x6
220m
3 double
x2
x1
Stunning 220m2 duplex located in the heart of Sant Gervasi, offering three double bedrooms, three elegant bathrooms (one en suite), a charming terrace, and an exclusive private pool for enjoying moments of relaxation and memorable dinners.
Amenities
What they say about us
Really hospitable staff, well designed Apartment, amenities were well maintained, and location is close to everything I needed.Would go back anytime
We had a spectacular year 👏🏻👍🏻👏🏻!!! Very friendly staff, impeccable cleanliness and the apartment is elegant and beautiful. Thanks Onsider 🙏
I was staying there 2 months. The best experience and location. 5 stars service and great design.
We stayed at the Onsider Barcelona for 1 month while we looked for our new long term home and our stay was extremely comfortable. The location is perfect with lots of restaurants, parks, shops, farmacias, and grocery stores nearby. The apartment was gorgeous - modern and stylish, yet comfortable for a family with 3 kids. The aroma of both the apartment and the lobby is amazing - in fact, I want to buy the room spray for our new house. The gym is clean, the roof deck & pool are an easy outdoor space without leaving the building. And I think I miss the convenience of the concierge service the most! Highly recommend.
When we moved to Barcelona, we stayed at The Onsider for 9 weeks, as temporary housing while we looked for an apartment. The Onsider is beautiful, elegant and modern. It made our life very easy, very well equipped with everything our family needed. The comfortable furniture, the convenient bedrooms, the big TV screen and house appliances... Every detail was very well taken care of. And the rooftop area is simply astonishing. The only thing that was not easy at all for us was having to leave The Onsider! The staff was also always helpful and nice. Thank you
Our family stayed at the Onsider in Barcelona for 6 months. The experience was absolutely excellent. Staying in Barcelona for the first time, my daughters and I were a little nervous. We found the Onsider online after loosing $4,000 on a poorly maintained and run AirBnB just around the corner. We were absolutely delighted with the apartment, the location, the furniture, and the excellent management and services provided by the development company that owns this property. We had a couple different challenges living in Barcelona and we were given assistance in every aspect of our stay there. The concierge service was absolutely priceless. The value received for our rental during on our stay was a solid 10 out of 10 points. I highly recommend this building, the management company, the location, and particularly Denise who I very much hope to see again.
We stayed at The Onsider for 6 weeks and everything there was perfect. From the apartment and the amenities to the crew who was always helpful and with a smile every time we talked to everybody. We loved our trip to Barcelona and in big part it was because our apartment was simply perfect. We live in Miami and we were a little nervous about the area and the commute to different parts of the city. The train station is a 5 minute walk and you'll be in the heart of Barcelona in 15 minutes. Thank you to the team at Onsider and we are looking forward to be back soon. ;-)
I had the great pleasure of staying at this building, The Onsider Barcelona, for an extended period last year. Having visited Barcelona from the US for the past seven years, and having stayed at a number of apartments therein, I can say with enthusiasm this is the best structure and location I have experienced. It is graceful, with a modern interior, and the staff are superb! You will not be disappointed. Quite the contrary, you will be pleased!